China paper says U.S., South Korea will ‘pay the price’ for planned missile system

THAAD missile system

BEIJING (Reuters) – The United States and South Korea are destined to “pay the price” for their decision to deploy an advanced missile defense system which will inevitably prompt a “counter attack”, China’s top newspaper said on Saturday.

Tension on the Korean peninsula has been high this year, beginning with North Korea’s fourth nuclear test in January, which was followed by a satellite launch, a string of tests of various missiles, and its fifth and largest nuclear test last month.

In July, South Korea agreed with the United States to deploy the U.S. Terminal High Altitude Area Defense (THAAD) anti-missile system to protect against any North Korean threats.

South Korea aims to deploy the system on a golf course, a defense ministry official said on Friday.

But the plan has angered China, which worries that THAAD’s powerful radar would compromise its security and do nothing to lower temperatures on the Korean peninsula.

In a commentary, the ruling Communist Party’s official People’s Daily said China’s opposition to THAAD would never change as it was a serious threat to the regional strategic security balance.

“Like any other country, China can neither be vague nor indifferent on security matters that affect its core interests,” the newspaper said in the commentary, published under the pen name “Zhong Sheng”, meaning “Voice of China”, often used to give views on foreign policy.

The United States and South Korea have to wake up to the fact that the Korean peninsula is no place to take risks, it added.

“If the United States and South Korea harm the strategic security interests of countries in the region including China, then they are destined to pay the price for this and receive a proper counter attack,” the paper added, without elaborating.

NO DETAILS YET

China has repeatedly promised to take specific steps to respond since the THAAD decision was announced, but has given no details about what it may do.

The United States and South Korea have said THAAD does not threaten China’s security or target any country other than North Korea.

China is North Korea’s most important diplomatic and economic partner, but Beijing has been infuriated by its nuclear and missile tests and has signed up for strong United Nations sanctions against North Korea.

However, China has continued to call for talks to resolve the North Korean issue and said sanctions are not the ultimate solution.

At a reception in Pyongyang on Friday for China’s National Day, Chinese Ambassador Li Jinjun said his country wanted to consolidate its friendship with North Korea, China’s Xinhua news agency said on Saturday.

The report made no mention of the nuclear issue.

(Reporting by Ben Blanchard; Editing by Richard Borsuk)

Fore! South Korea golf course may get anti-missile battery

THAAD

By Ju-min Park and Hyunjoo Jin

SEOUL (Reuters) – South Korea’s military aims to deploy an advanced U.S. missile defense unit on a golf course, a defense ministry official said on Friday, after it had to scrap its initial site for the battery in the face of opposition from residents.

Tension on the Korean peninsula has been high this year, beginning with North Korea’s fourth nuclear test in January, which was followed by a satellite launch, a string of tests of various missiles, and its fifth and largest nuclear test this month.

In July, South Korea agreed with the United States that a U.S. Terminal High Altitude Area Defense (THAAD) anti-missile unit would be deployed in the Seongju region, southeast of the capital, Seoul, to defend the country.

But residents of the melon-farming area protested over worries about the safety of the system’s powerful radar and the likelihood it would be a target for North Korea, which warned of retaliation, if war broke out.

The plan to deploy the system has also angered China, which worries that the THAAD’s powerful radar would compromise its security.

The new site for the missile battery would be a golf course at the high-end Lotte Skyhill Seongju Country Club, the South Korean ministry official said told Reuters, confirming media reports.

The club is owned by the Lotte Group conglomerate and had been considered as an alternative due to its high altitude and accessibility for military vehicles, the defense official said.

It was not clear how the military would acquire the property, reportedly worth about 100 billion won ($90.54 million).

“We will positively consider the deployment of THAAD at the golf course considering the grave situation regarding national security,” Kim Byung-wook, an official at the club, told Reuters by phone.

He said the company had received a notice from the defense ministry about the plan on Thursday.

The United States said this week that it would speed up deployment of the system given the pace of North Korea’s missile tests, and it would be stationed in South Korea “as soon as possible”.

The United States and South Korea have said THAAD does not threaten China’s security or target any country other than North Korea.

In Beijing, Chinese Foreign Ministry spokesman Geng Shuang said deployment of the system should be stopped, and again promised unspecified countermeasures.

“The United States’ deployment of THAAD in South Korea cannot resolve the relevant parties’ security concerns,” he told a daily news briefing.

The military analyzed three possible locations for the system and found the golf course to be the most feasible, the defense official said, as the other two would require additional engineering which would delay the deployment.

The official declined to be identified as he was not authorized to speak to media.

(Additional reporting by Hyunjoo Jin, and Michael Martina in Beijing; Editing by Tony Munroe, Robert Birsel)

Squeezing North Korea: old friends take steps to isolate regime

Friendship bridge between China and North Korea

By Ju-min Park and Tony Munroe

SEOUL (Reuters) – From kicking out North Korean workers and ending visa-free travel for its citizens, to stripping flags of convenience from its ships, Cold War-era allies from Poland to Mongolia are taking measures to squeeze the isolated country.

More such moves, with prodding from South Korea and the United States, are expected after North Korea recently defied U.N. resolutions to conduct its fifth nuclear test.

North Korea’s limited global links leave most countries with few targets for penalizing the regime on their own.

Mounting sanctions over the years have made Pyongyang more adept at evasion and finding alternative sources for procurement, a recent paper by experts at Harvard University and the Massachusetts Institute of Technology found.

Nonetheless, South Korea has been especially active in pushing the North’s allies for unilateral action in hopes of reining in Pyongyang’s arms program.

“If long-standing friends of North Korea continue to publicly curb their ties with the country, Pyongyang will have fewer places overseas where its illicit networks can operate unhindered or with political cover from the host capital,” said Andrea Berger, deputy director of the proliferation and nuclear policy program at the Royal United Services Institute (RUSI).

South Korean officials have declined to say whether they have made inducements to countries to punish North Korea.

“Presumably in the course of that diplomatic interaction it is also being made clear to Pyongyang’s partners that deeper trade ties with economies like South Korea will not be fully realizable” without taking steps against North Korea, Berger said.

Angola, for one, has suspended all commercial trade with Pyongyang, banning North Korean companies from operating there since the U.N. toughened sanctions in March, a South Korean foreign ministry official told Reuters recently.

Angola was suspected of buying military equipment in 2011 from North Korea’s Green Pine Associated Corp, which is under U.N. sanction, according to a 2016 U.N. report. North Korea had also cooperated with Angola in health care, IT and construction, South Korea’s embassy there said in December.

Angolan officials did not respond to requests for comment, but the country told the U.N. in July it had not imported any light weapons from North Korea in recent years.

North Korea’s export of cheap labor has also been targeted.

Earlier this year, Washington urged countries to curb the use of North Korean workers, who number roughly 50,000 and generate between $1.2 billion and $2.3 billion annually for Pyongyang, according to a 2015 U.N. report.

Poland, which hosted as many as 800 North Korean workers, according to some estimates, this year stopped renewing visas, as did Malta.

Travel restrictions have also increased, with Ukraine recently revoking a Soviet-era deal that allowed visa-free visits for North Koreans.

Singapore, which has been a hub for North Korea-linked trade, will require visitors from the country to apply for visas starting next month, its immigration authority said in July.

DE-FLAGGED

The vast majority of North Korea’s trade is with China, and experts warn sanctions will have limited impact without Beijing’s backing. China condemns Pyongyang’s nuclear program but is also its chief ally and is unwilling to pressure leader Kim Jong Un’s regime too far, fearing a collapse that would destabilize the entire region. That means agreeing significantly tightened U.N. sanctions could be difficult.

Some of the most tangible results of recent efforts to isolate North Korea have seen countries ban its ships from their registries. North Korean-owned vessels are suspected of using other flags to camouflage the movement of illicit cargo.

Landlocked Mongolia, which is among Pyongyang’s steadiest allies but also has close ties with Seoul, canceled the registrations of all 14 North Korean vessels flying its flag, according to a report it submitted to the U.N. in July, even though sanctions compelled it to act on just one of them.

Cambodia, once the most popular flag of convenience for North Korea, ended its registry scheme for all foreign ships in August, although it did not single out North Korea.

The flags of 69 North Korean ships, none of them on a U.N. blacklist, have been de-registered since the U.N. tightened sanctions in March, South Korea’s foreign minister said last month. The North’s merchant fleet is estimated by the U.N. at roughly 240 vessels.

Still, one-off measures by various countries mean Pyongyang can simply shift its business elsewhere – a shortcoming of unilateral actions in general.

China and Russia employ the bulk of North Korean workers and have publicly shown no inclination to halt the practice.

Last week, North Korean state media announced the Sept 19 “inauguration” of its embassy in the Belarusian capital Minsk. However, on Monday, the Belarus foreign ministry said there was no North Korean embassy there, although it did not immediately give further information.

Pyongyang has been known to use diplomatic personnel, several whom have been caught with large amounts of gold or cash, to procure banned equipment or fund illegal activities.

China, experts say, remains the key.

“Rather than being efficient, unilateral actions put psychological pressure on the North,” said Chang Yong-seok, a senior researcher at the Institute for Peace and Unification Studies at Seoul National University. “But like criminal gangs, North Korea won’t cringe much under psychological pressure.”

(Additional reporting by Andrei Makhovsky in Minsk, Herculano Coroado in Luanda and Prak Chan Thul in Phnom Penh; Editing by Lincoln Feast)

U.S. bombers fly over South Korea for second time since North’s nuclear test

US Air Bomber

By Yoo Han-bin

OSAN, South Korea (Reuters) – Two U.S. supersonic bombers flew over South Korea on Wednesday, with one of them landing at an air base 40 km (25 miles) south of the capital, the second such flight since North Korea’s Sept. 9 nuclear test.

U.S. Forces Korea said the flight by a pair of B-1B Lancer strategic bombers based in Guam was a show of force and of U.S. commitment to preserve the security of the peninsula and the region.

The United States, which has about 28,500 troops in South Korea, flew two B-1 bombers on Sept. 13 escorted by U.S. and South Korean fighter jets in a show of solidarity with Seoul.

The North condemned the earlier flight as an armed provocation that mobilized “ill-famed nuclear killing tools”. It did not immediately respond to Wednesday’s flight.

The U.S. Air Force said the Wednesday flight was the closest ever to North Korea by a B-1 bomber.

“Today marks the first time the airframe has landed on the Korean peninsula in 20 years, as well as conducting the closest flight near North Korea ever,” the U.S. Air Force said on its website which also showed a B-1B bomber landing at the base in South Korea.

The South’s Yonhap news agency said the aircraft flew over a U.S. live-fire training site in the Pocheon area bordering the North.

North Korea has ignored global condemnation of its fifth nuclear test on Sept. 9, and this week said it had successfully tested a new rocket engine that would be used to launch satellites, again in violation of U.N. sanctions.

The leaders of the United States and China, which is the North’s main diplomatic ally and economic benefactor, condemned the latest nuclear test and pledged to step up cooperation at the United Nations and in law enforcement channels.

CHINA URGES RESTRAINT

U.N. diplomats say the two countries have begun discussions on a possible U.N. resolution in response to the latest nuclear test, but China has not said directly whether it would support tougher steps against North Korea.

China, which has objected to a planned U.S. deployment of a THAAD missile defense system in the South to counter the North’s missile threat, called on “all parties to exercise restraint and to avoid any actions that could further escalate tensions”.

South Korea’s prime minister, Hwang Kyo-ahn, told parliament South Korea wanted existing U.N. sanctions against the North tightened by removing loopholes that allow it to trade in minerals if it is for subsistence.

North Korea has been testing nuclear weapons and ballistic missiles at an unprecedented rate this year, beginning with its fourth nuclear test in January and including the launch of a satellite in February that was widely seen as a test of long-range ballistic missile technology.

The North’s test of a new rocket engine for satellite launchers this week was believed to be part of a long-range missile program, according to the South’s military.

North Korea’s leader, Kim Jong Un, ordered preparations for the launch of a satellite “as soon as possible” on the basis of the successful test, its state media reported.

North Korea this month fired three missiles that flew about 1,000 km (600 miles), and in August tested a submarine-launched ballistic missile that experts said showed considerable progress.

It also launched an intermediate-range missile in June that experts said marked a technological advance for the isolated state after several failed tests.

South Korean Defence Minister Han Min-koo told parliament the North was developing all types of missiles, from short- to long-range, and its advances were “considerable”.

(Refiles to clarify the flight was the closest to border by a B-1 bomber in paragraph five)

(Additional reporting by James Pearson in Seoul and Michael Martina in Beijing; Writing by Ju-min Park, Jack Kim; Editing by Paul Tait, Robert Birsel)

Between reckless ally and old rival, China in a bind over North Korea

A general view shows the unfinished New Yalu River bridge that was designed to connect China's Dandong New Zone, Liaoning province, and North Korea's Sinuiju.

By Benjamin Kang Lim and Michelle Nichols

BEIJING/UNITED NATIONS (Reuters) – China is in a bind over what to do about North Korea’s stepped-up nuclear and missile tests, even though it is annoyed with its ally and has started talks with other U.N. Security Council members on a new sanctions resolution against Pyongyang.

China shares a long land border with North Korea and is seen as the only country with real power to bring about change in the isolated and belligerent nation. However, Beijing fears strengthening sanctions could lead to collapse in North Korea, and it also believes the United States and its ally South Korea share responsibility for growing tensions in the region.

China is in a difficult spot, a source close to the Chinese leadership told Reuters when asked if Beijing’s attitude to North Korea had changed after its fifth nuclear test last week.

“On the one hand, China is resolutely opposed to North Korea developing nuclear weapons for fear of triggering a nuclear arms race in the region,” the source said, referring to Japan and South Korea following in Pyongyang’s footsteps.

“On the other hand, North Korea is a big headache but regime change is not an option,” the source added. “Collapse of the regime would lead to chaos in (China’s) northeast” bordering North Korea, the source said, requesting anonymity.

The prospect of a unified Korea under Seoul’s leadership and the possibility of U.S. troops on China’s borders has long been a nightmare for Beijing.

A collapse in North Korea, sending a flood of refugees across the relatively porous border into China’s rustbelt northeastern provinces, would also be deeply destabilizing to Beijing’s rule as well as a huge economic cost.

Those concerns have been around for years, but now Beijing is also deeply angered by a U.S. decision to deploy an advanced anti-missile system in South Korea, the Terminal High Altitude Area Defense (THAAD) system. It has said its own security has been compromised and that North Korea’s recent belligerence is due to this deployment.

Publicly, China has not linked the THAAD deployment with whether it will support sanctions on North Korea. It condemned the latest missile and nuclear tests but said sanctions alone could not resolve the issue and has called for a resumption of talks with Pyongyang.

Beijing has also said it will work within the United Nations to formulate a necessary response to its fifth nuclear test.

“We’re in negotiations on a U.N. Security Council resolution,” Samantha Power, the U.S. ambassador to the United Nations, said on Thursday.

Diplomats said the talks were at an early stage and negotiations were likely to be long and tough.

IRRITATION AND CONSENSUS

One senior U.N. diplomat said Beijing made displeasure with Pyongyang clear at an earlier Security Council meeting called after North Korea tested three medium range missiles at an embarrassing time – when U.S. President Barack Obama and other world leaders were gathered for the G20 summit in the eastern Chinese city of Hangzhou this month.

“The tone of the whole discussion was much more consensual, it didn’t feel like there was two camps fighting arguing with each other,” said the diplomat. “Of course there continue to be different views about sanctions.”

The United States has called on Beijing to use its influence to get North Korea to give up its nuclear ambitions, and to close sanctions “loopholes”, since the existing ones had done little to prevent Pyongyang from pursuing its nuclear and missile programs.

Shen Wenhui, a researcher at the Chinese Academy of Social Sciences, told influential state-run newspaper the Global Times last week that crippling sanctions would cause a “humanitarian disaster” in North Korea.

“In putting sanctions on North Korea, the international community must reduce the effect on ordinary people to the greatest possible extent,” Shen wrote.

China’s concerns also include the larger issue of what Beijing sees as Washington’s attempts to surround it under Obama’s strategic “rebalance” towards Asia. Besides THAAD, the dispute in the South China Sea, cybersecurity and human rights have marred ties between the world’s two biggest economies.

Chinese officials also say that the West over-estimates its influence with North Korea.

“I think any idea to ask North Korea to abandon nuclear weapons would fail, and any idea to ask South Korea to abandon THAAD would fail,” said Shen Dingli, a professor at Shanghai’s elite Fudan University and director of the school’s Program on Arms Control and Regional Security.

North Korea is useful for China, Shen added. “China needs North Korea to counter the United States.”

In Seoul, some are already accepting that China will not do much more to punish North Korea.

“The sanctions that North Korea will not be able to endure will be all blocked by China even without being asked by the North,” Chun Yung-woo, a former South Korean national security adviser, told Reuters. “So the North is hiding behind that and comfortably pursuing the nuclear programmer’s.”

(Additional reporting by Michael Martina in Beijing, James Pearson, Jack Kim and Ju-min Park in Seoul and David Brunnstrom in Washington; Writing by Ben Blanchard; Editing by Raju Gopalakrishnan)

North Korea says ready for ‘another attack’ against U.S. ‘provocations’

A rally celebrating the success of a recent nuclear test is held in Kim Il Sung square in this undated photo released by North Korea's Korean Central News Agency

CARACAS, Venezuela (Reuters) – North Korea’s Foreign Minister said on Thursday the country was ready to launch another attack against the “provocations” of the United States, whose bombers this week flew over South Korea in a show of solidarity with its ally after Pyongyang’s latest nuclear test.

North Korea set off its most powerful nuclear blast to date this month, saying it had mastered the ability to mount a warhead on a ballistic missile and ratcheting up a threat that its rivals and the United Nations have been powerless to contain.

Two U.S. B-1 bombers flew over South Korea on Tuesday, drawing condemnation from the North.

“The people of Korea are ready to stage another attack against the provocations of the United States,” said Foreign Minister Ri Yong Ho during a speech at a meeting of the Non-Aligned Movement countries in Venezuela that was translated into Spanish.

Seoul has also said North Korea was ready to conduct an additional nuclear test at any time.

North Korea’s latest test has launched a fresh push by the United States and South Korea for more sanctions. Pressure for further sanctions was “laughable”, North Korea has said, vowing to continue to strengthen its nuclear power.

(Reporting by Diego Ore; Editing by James Dalgleish)

Top diplomats from U.S., Japan, South Korea to meet on North Korea

Ryoo Yong-gyu, Earthquake and Volcano Monitoring Division Director, points at where seismic waves observed in South Korea came from, during a media briefing at Korea Meteorological Administration in Seoul

By Tony Munroe and Ben Blanchard

SEOUL/BEIJING, Sept 14 (Reuters) – U.S. Secretary of State John Kerry will meet with his Japanese and South Korean counterparts in New York on Sunday to discuss responses to North Korea’s latest nuclear test, South Korea’s foreign ministry said on Wednesday.

The three countries are pushing for tough new U.N. Security Council sanctions on North Korea after the isolated country on Friday conducted its fifth and largest nuclear test.

The blast was in defiance of U.N. sanctions that were tightened in March.

China, the North’s chief ally, backed the March resolution but is more resistant to harsh new sanctions this time after the United States and South Korea decided to deploy a sophisticated anti-missile system in the South, which China adamantly opposes.

South Korea said Foreign Minister Yun Byung-se and his counterparts Kerry and Japanese Foreign Minister Fumio Kishida will meet during the annual U.N. General Assembly to discuss putting further pressure on North Korea.

The United States wants China to do more, with U.S. Defense Secretary Ash Carter last week singling out the role he said China should play in curbing its neighbor.

TESTING TIMES

North Korea has been testing nuclear weapons and ballistic missiles at an unprecedented rate this year under young leader Kim Jong Un.

On Tuesday, Chinese Foreign Minister Wang Yi spoke with South Korea’s Yun by phone, expressing Beijing’s opposition to the North’s latest nuclear test but also reiterating opposition to the planned deployment of the Terminal High Altitude Area Defense (THADD) anti-missile system in the South, China’s foreign ministry said.

China is North Korea’s most important diplomatic and trade partner and refuses to cut the country off completely, fearing it could collapse.

Beijing’s official People’s Daily newspaper on Wednesday called the United States a troublemaker and said it has no right to lecture China about taking responsibility for reining in North Korea as tensions on the peninsula are a direct result of U.S. actions.

In a commentary, the ruling Communist Party’s official paper said the United States was pretending it had nothing to do with the North Korea issue and was putting the blame on others.

“People have reason to doubt whether Washington is willing to make the effort to push the North Korea issue in the direction of a resolution,” the paper said.

China and Russia have pushed for a resumption of six party talks on denuclearization in North Korea. The talks, which also involve Japan, South Korea and the United States, have been on hold since 2008.

Washington has said it is willing to negotiate with the North if it the country commits to denuclearization, which Pyongyang has refused to do.

Japanese Prime Minister Shinzo Abe will seek Cuba’s help in responding to North Korea’s nuclear and missile programs during a rare visit to Havana next week, a spokesman said.

Top diplomats from U.S., Japan, South Korea to meet on North Korea

World leaders from US, Japan, and South Korea

By Tony Munroe and Ben Blanchard

SEOUL/BEIJING (Reuters) – U.S. Secretary of State John Kerry will meet with his Japanese and South Korean counterparts in New York on Sunday to discuss responses to North Korea’s latest nuclear test, South Korea’s foreign ministry said on Wednesday.

The three countries are pushing for tough new U.N. Security Council sanctions on North Korea after the isolated country on Friday conducted its fifth and largest nuclear test.

The blast was in defiance of U.N. sanctions that were tightened in March.

China, the North’s chief ally, backed the March resolution but is more resistant to harsh new sanctions this time after the United States and South Korea decided to deploy a sophisticated anti-missile system in the South, which China adamantly opposes.

South Korea said Foreign Minister Yun Byung-se and his counterparts Kerry and Japanese Foreign Minister Fumio Kishida will meet during the annual U.N. General Assembly to discuss putting further pressure on North Korea.

The United States wants China to do more, with U.S. Defence Secretary Ash Carter last week singling out the role he said China should play in curbing its neighbor.

TESTING TIMES

North Korea has been testing nuclear weapons and ballistic missiles at an unprecedented rate this year under young leader Kim Jong Un.

On Tuesday, Chinese Foreign Minister Wang Yi spoke with South Korea’s Yun by phone, expressing Beijing’s opposition to the North’s latest nuclear test but also reiterating opposition to the planned deployment of the Terminal High Altitude Area Defense (THADD) anti-missile system in the South, China’s foreign ministry said.

China is North Korea’s most important diplomatic and trade partner and refuses to cut the country off completely, fearing it could collapse.

Beijing’s official People’s Daily newspaper on Wednesday called the United States a troublemaker and said it has no right to lecture China about taking responsibility for reining in North Korea as tensions on the peninsula are a direct result of U.S. actions.

In a commentary, the ruling Communist Party’s official paper said the United States was pretending it had nothing to do with the North Korea issue and was putting the blame on others.

“People have reason to doubt whether Washington is willing to make the effort to push the North Korea issue in the direction of a resolution,” the paper said.

China and Russia have pushed for a resumption of six party talks on denuclearization in North Korea. The talks, which also involve Japan, South Korea and the United States, have been on hold since 2008.

Washington has said it is willing to negotiate with the North if it the country commits to denuclearization, which Pyongyang has refused to do.

Japanese Prime Minister Shinzo Abe will seek Cuba’s help in responding to North Korea’s nuclear and missile programs during a rare visit to Havana next week, a spokesman said.

(Editing by Lincoln Feast)

North Korea ramps up uranium enrichment, enough for six nuclear bombs a year: experts

Kim Jong Un of North Korea

By Jack Kim and James Pearson

SEOUL (Reuters) – North Korea will have enough material for about 20 nuclear bombs by the end of this year, with ramped-up uranium enrichment facilities and an existing stockpile of plutonium, according to new assessments by weapons experts.

The North has evaded a decade of U.N. sanctions to develop the uranium enrichment process, enabling it to run an effectively self-sufficient nuclear program that is capable of producing around six nuclear bombs a year, they said.

The true nuclear capability of the isolated and secretive state is impossible to verify. But after Pyongyang conducted its fifth and most powerful nuclear test last week and, according to South Korea, was preparing for another, it appears to have no shortage of material to test with.

North Korea has an abundance of uranium reserves and has been working covertly for well over a decade on a project to enrich the material to weapons-grade level, the experts say.

That project, believed to have been expanded significantly, is likely the source of up to 150 kilograms (330 pounds) of highly enriched uranium a year, said Siegfried Hecker, a leading expert on the North’s nuclear program.

That quantity is enough for roughly six nuclear bombs, Hecker, who toured the North’s main Yongbyon nuclear facility in 2010, wrote in a report on the 38 North website of Johns Hopkins University in Washington published on Monday.

Added to an estimated 32- to 54 kilogram plutonium stockpile, the North will have sufficient fissile material for about 20 bombs by the end of 2016, Hecker said.

North Korea said its latest test proved it was capable of mounting a nuclear warhead on a medium-range ballistic missile, but its claims to be able to miniaturize a nuclear device have never been independently verified. [nL3N1BL1ND]

Assessments of the North’s plutonium stockpile are generally consistent and believed to be accurate because experts and governments can estimate plutonium production levels from telltale signs of reactor operation in satellite imagery.

South Korean Defence Minister Han Min-koo this year estimated the North’s plutonium stockpile at about 40 kilograms.

But Hecker, a former director of the U.S. Los Alamos National Laboratory, where nuclear weapons have been designed, has called North Korea’s uranium enrichment program “their new nuclear wildcard,” because Western experts do not know how advanced it is.

PAKISTAN CONNECTION

Jeffrey Lewis of the California-based Middlebury Institute of International Studies said North Korea had an unconstrained source of fissile material, both plutonium from the Yongbyon reactor and highly-enriched uranium from at least one and probably two sites.

“The primary constraint on its program is gone,” Lewis said. Weapons-grade plutonium has to be extracted from spent fuel taken out of reactors and then reprocessed, and therefore would be limited in quantity. A uranium enrichment program greatly boosts production of material for weapons.

The known history of the uranium enrichment project dates to 2003, when the North was confronted by the United States with evidence of a clandestine program to build a facility to enrich uranium with the help of Pakistan.

Former Pakistani President Pervez Musharraf said in his memoirs that A.Q. Khan, the father of that country’s nuclear program, transferred two dozen centrifuges to the North and some technical expertise around 1999.

“It was also clear that the suspected Pakistani connection had taken place, as the centrifuge design resembled Pakistan’s P-2 centrifuge,” Hecker said in a report in May.

Hecker reported being shown around a two-story building in the Yongbyon complex in November 2010 that a North Korean engineer said contained 2,000 centrifuges and a control room Hecker called “astonishingly modern.”

By 2009, the North had likely acquired the technology to be able to expand the uranium project indigenously, Joshua Pollack, editor of the U.S.-based Nonproliferation Review, has said.

North Korea has not explicitly admitted to operating the centrifuges to produce weapons-enriched uranium, instead claiming they were intended to generate fuel for a light water reactor it was going to build.

Despite sanctions, by now North Korea is probably largely self-sufficient in operating its nuclear program, although it may still struggle to produce some material and items, Lewis said.

“While we saw this work in Iran, over time countries can adjust to sanctions,” he said.

(Editing by Raju Gopalakrishnan)

U.S. Bombers fly over South Korea in show of force after nuclear test

A U.S. Air Force B-1B bomber flies over Osan Air Base in Pyeongtaek

By James Pearson and Ju-min Park

SEOUL (Reuters) – Two U.S. B-1 bombers flew over South Korea on Tuesday in a show of force and solidarity with its ally after North Korea’s nuclear test last week, while a U.S. envoy called for a swift and strong response to Pyongyang from the United Nations.

Speaking in the South Korean capital on Tuesday, Sung Kim, the U.S. envoy on North Korea, added that the United States remained open to meaningful dialogue with Pyongyang on ending its pursuit of nuclear weapons.

“Our intention is to secure the strongest possible (U.N. Security Council) resolution that includes new sanctions as quickly as possible,” Kim told a news briefing after meeting his South Korean counterpart.

He said the United States would work with China, North Korea’s major diplomatic ally, to close loopholes in existing resolutions, which were tightened with Beijing’s backing in March.

“China has been very clear that they understand the need for a new U.N. security council resolution in response to the latest North Korean nuclear test,” Kim said.

However, China and Russia, which strongly oppose a recent decision by the United States and South Korea to deploy an advanced anti-missile system in the South to counter the North’s missile threat, have shown reluctance to back further sanctions.

“Both sides think that North Korea’s nuclear test is not beneficial to peace and stability on the Korean peninsula,” China’s official People’s Daily newspaper said on Tuesday following a high-level China-Russia security meeting in Beijing.

“At present, we must work hard to prevent the situation on the peninsula continuing to escalate, and put the issue of the nuclearization of the peninsula back on the track of dialogue and consultation,” it said.

FORCE AND SOLIDARITY

The pair of U.S. supersonic B-1B Lancer strategic bombers took off from their base in Guam and flew with two Japan Air Self Defense Force aircraft before a “hand-off” to South Korean fighters, according to the U.S. military.

The B-1Bs were then escorted by South Korean and U.S. fighter jets in a low-altitude flight over Osan Air Base, which is 77 km (48 miles) from the Demilitarised Zone border with the North and about 40 km (25 miles) from the South’s capital Seoul.

“These flights demonstrate the solidarity between South Korea, the United States, and Japan to defend against North Korea’s provocative and destabilizing actions,” said Admiral Harry Harris, commander of the U.S. Pacific Command.

North Korea’s official KCNA news agency said public anger was “exploding like a volcano” over Washington’s dispatch of bombers to South Korea.

“Any sanction, provocation and pressure cannot ruin our status as a nuclear state and evil political and military provocations will only result in a flood of reckless nuclear attacks that will bring a final destruction,” KCNA said.

China urged restraint among all parties. “If there is a vicious cycle of tensions continuing to rise and mutual provocations, this is not in anyone’s interests,” Chinese foreign ministry spokeswoman Hua Chunying told a daily briefing.

North Korea’s weapons enhancements, including the testing of various types of missiles this year at an unprecedented rate, have alarmed neighbors South Korea and Japan.

A U.S. Air Force U-2 jet flies over Osan Air Base in Pyeongtaek, South Korea, September 13, 2016. REUTERS/Kim Hong-Ji

A U.S. Air Force U-2 jet flies over Osan Air Base in Pyeongtaek, South Korea, September 13, 2016. REUTERS/Kim Hong-Ji

South Korean President Park Geun-hye maintained her tough stance against the North.

The two Koreas remain technically at war after their 1950-53 conflict ended in a truce, not a peace treaty.

“I want our government and military to stay fully ready to retaliate, determined to end North Korea’s regime once North Korea fires even one missile nuclear-armed missile toward our territory,” Park told a cabinet meeting.

A group of lawmakers in South Korea said on Monday the country should have a nuclear force of its own, either by acquiring weapons or asking the United States to redeploy tactical nuclear weapons withdrawn under a 1991 pact for denuclearization of the Korean peninsula.

Kim, the U.S. envoy, said there was no need to reintroduce nuclear weapons in South Korea.

North Korea has refused the U.S. demand that it accept denuclearization as a condition for holding dialogue.

“It’s a question of North Korean intentions and commitment. If North Korea is ready to talk to us sincerely, I think we can work with that within the six party process,” Kim said.

The six party talks aimed at ending the North’s nuclear program involve the United States, Russia, Japan, South Korea, China, and North Korea but have been stalled since 2008.

South Korea said on Monday the North is ready to conduct an additional nuclear test at any time after setting off its most powerful blast to date on Friday.

(Additional reporting by Kim Do-gyun in Osan, Ben Blanchard in Beijing and Linda Sieg in Tokyo; Writing by Jack Kim and Tony Munroe; Editing by Lincoln Feast and Raju Gopalakrishnan)