Preliminary U.S. intelligence estimates have concluded that North Korea’s fourth underground nuclear test on Tuesday involved a small explosion that could be a component of a larger-scale thermonuclear device.
U.S. officials familiar with intelligence reports of the underground test estimated the low yield of the detected blast to be between 5 kilotons to 7 kilotons—far less than would be detected in a two-stage thermonuclear blast, or hydrogen bomb.
The Pyongyang government announced that the test that took place Wednesday morning local time at a nuclear testing site in northeast North Korea and that it was a successful “first H-bomb test.”
The test was announced in two official statements broadcast on state-run radio and television.
Unlike the past three nuclear tests, the regime conducted the test with no advance notice. Past tests were preceded by stern public warnings in state-run media.
Also in a break with practice, the two official North Korean statements asserted the test was directly ordered by North Korean leader Kim Jong Un. A copy of Kim’s written order was shown on North Korean television, and he was shown signing the order.
Another unusual feature in the handling of the nuclear test were statements indicating the blast was carried out “safely and flawlessly” without harming the environment. The statements noted that North Korea is a responsible nuclear power and would not be the first to use nuclear arms in a conflict and would not transfer nuclear technology unless “hostile forces infringe upon its sovereignty.”
Initial U.S. intelligence analysis of the official statements indicates the test had two goals.
One key objective for the underground blast was to bolster statements last month by North Korean leader Kim Jong Un that the North has developed a hydrogen bomb.
By conducting the test, Kim is seeking to cement his position within the regime. The supreme leader turns 33 on Friday and is widely viewed by intelligence analysts as inexperienced, compared to his father and grandfather, Kim Jong Il and Kim Il Sung.
A second objective of the test was to persuade China, North Korea’s main patron, to back off pressuring the regime to abandon its nuclear program.
The harsh language used in the official statement—including a threat to adopt a more hostile posture in the coming months—were interpreted as a sign that the current tense relations with China over its opposition to the nuclear program was a main driver behind the surprise nuclear test.
“Initial reports indicate the North Koreans may be bragging a little bit too much,” said one official of the claims of a hydrogen bomb test.
The test was widely reported on social media shortly after it took place based on detection of a 5.1 magnitude seismic event Tuesday evening near a nuclear test site called Punggye-ri, in Kilju, North Hamgyong Province.
The test prompted international condemnation but a limited reaction from the Obama administration, which sought to play down the latest nuclear provocation.
In New York, the United Nations held an emergency meeting during which additional sanctions on North Korea were discussed. Sanctions were imposed after earlier nuclear tests in 2006, 2009, and 2013.
At the Pentagon, Defense Secretary Ash Carter, who was briefed on the test by Gen. Curtis Scaparrotti, commander of U.S. Forces in Korea, spoke by telephone to South Korean Defense Minister Han Min Koo. Both officials agreed the test was an “unacceptable and irresponsible provocation” as well as a “flagrant violation of international law and a threat to the peace and stability of the Korean Peninsula and the entire Asia-Pacific region,” according to a statement.
Carter stressed in the call the United States was committed to maintaining U.S. extended nuclear deterrence protection for South Korea.
The White House said the United States and regional allies would take up the test at the United Nations, which sanctioned North Korea for past nuclear and missile tests.
“What is true is that North Korea continues to be one of the most isolated nations in the world and their isolation has only deepened as they have sought to engage in increasingly provocative acts,” spokesman Josh Earnest said.
On Capitol Hill, senior Republican leaders criticized the Obama administration for weak policies toward the rogue state.
House Speak Paul Ryan said the increasing nuclear threat posed by North Korea grew out of the failed nuclear agreement with North Korea reached by the Bill Clinton administration.
“This is exactly what happens when we appease and embolden rogue regimes,” Ryan said, noting the test had not been confirmed.
“President Obama has been guilty of this on more than one occasion,” he added, noting failed policies in Syria and Iran.
“The world is a safer place when we stand up to brutal regimes like those in Tehran, Damascus, and Pyongyang—and that’s not happening under our current president,” Ryan said.
House Armed Services Committee Chairman Mac Thornberry said the test shows “the world is rapidly growing more dangerous, and the United States cannot afford to focus only on ISIS or Iran or Russia.”
“We must be prepared to protect our national security against many threats,” Thornberry said. “Unfortunately, the view around the world is that U.S. leadership is in decline while the administration’s inaction only fuels those concerns.”
Thornberry called for deployment of the Terminal High-Altitude Area Defense anti-missile system in South Korea and for strengthening the U.S. nuclear deterrent.
Rep. Mike Rogers, chairman of the Armed Services subcommittee on strategic forces, criticized the president’s policies.
“We are watching seven years of President Obama’s failures play out—this is what ‘leading from behind’ has wrought,” said Rogers (R., Ala.)
“While the president has wasted his two terms in office, North Korea has continued to develop its ballistic missile and nuclear weapons capabilities,” Rogers added.
Former Pentagon nuclear forces official Mark Schneider said the reported low yield of the test indicates the blast was not a thermonuclear device.
“It could be a fission trigger or primary for a thermonuclear weapon,” he said.
Schneider said nuclear specialists at Los Alamos National Laboratory are betting at estimating nuclear yields than U.S. intelligence agencies, which during the Cold War consistently underestimated Soviet thermonuclear tests.
“If the yield is significantly higher than the 6-kt estimated in [news reports], it could be more than a primary test,” Schneider added.
North Korea is estimated to have a stockpile of between one and several dozen missile-deliverable warheads.
Rep. Mike Pompeo, a member of the House Permanent Select Committee on Intelligence, said the North Korean nuclear threat is “a frightening vision of a future with President Obama’s nuclear agreement with Iran.”
“This is yet another example of how President Obama and former secretary [of state Hillary] Clinton’s policy of ‘strategic patience’ with North Korea has led the U.S. down a perilous path, and we are in urgent need of a new approach,” said Pompeo (R., Kan.)
“We cannot continue President Obama’s policy of turning a blind eye to North Korea and Iran.”
A Chinese government spokesman said Beijing opposed the test but warned Japan not to take provocative counter actions in response.
China has sought to rein in North Korea military provocations, including nuclear and long-range missile tests.
“We strongly urge [North Korea] to remain committed to its denuclearization commitment, and stop taking any actions that would make the situation worse,” Foreign Ministry spokeswoman Hua Chunying said.
The European Union, in a statement, said that if the test blast is confirmed as nuclear it would be “a grave violation” of North Korea’s international obligations under U.N. resolutions not to produce or test nuclear weapons.
A nuclear test would be “a threat to the peace and security of the entire North East Asia region,” the EU said.
NATO Secretary General Jens Stoltenberg criticized the announced nuclear test. “I condemn the continued development by North Korea of nuclear weapons and ballistic missile programs and its inflammatory and threatening rhetoric,” he said.
The latest nuclear test was not a surprise and followed a recent boast from Kim, the North Korean leader, that his state had developed a thermonuclear bomb.
South Korea’s Chemical, Biological, and Radiological Defense Command, a Defense Ministry group, stated in a report made public Sunday that a nuclear test was expected but that it likely would not be a large-scale thermonuclear blast.
“We can’t discount the possibility that the North’s excavation of a new tunnel at its Punggye-ri test site could be designed for thermonuclear weapons tests,” command said. “Considering its research of nuclear technology, its history of underground and projectile tests, and elapsed time since its nuclear development, North Korea has the foundation for thermonuclear weapons, the report added according to the semi-official Yonhap news agency.
Thermonuclear bombs are advanced weapons that employ a nuclear blast to create a larger hydrogen blast.
Former Defense Intelligence Agency official Bruce Bechtol said if the test was a hydrogen bomb “this means the North Koreans are advancing their nuclear weaponization program at a faster and more efficient—and deadly—pace than most analysts have predicted in the past.”
“Yes it changes things,” he added. “It increases the possibilities regarding the threat that North Korea can pose to South Korea, the region, and the USA.”
The nuclear test follows North Korea’s successful submarine missile ejection test Dec. 21 from a submerged submarine. The test was regarded by U.S. intelligence agencies as a significant advance in Pyongyang’s bid to develop nuclear-armed submarine-launched missiles.
The submarine used in the test, known as the Gorae, or Whale, suffered a serious malfunction in attempting an ejection test Nov. 28. That test nearly sank the submarine, which returned to port listing at a 45-degree angle, according to U.S. officials.
첫댓글howcome you bring it here? what"s your point? is there anything special? Do you know it could make many people sick? It"s not comfortable to see all english page. please, give us a peace feeling about this is like this picture without explain
북한이 진짜수소폭탄을 개발했나보네...소형이니(그들의 추정, 5kt-7kt) 수소폭탄기폭시험(통상적으로 핵분열탄)한것인줄 착각하고 있네...그런데 북한에서 큰규모의 핵/수소탄테스트는 국토가 작아서 하기힘들다. 이란 같이 넓은 사막이 있으면 시원하게 메가톤급으로 지상수소탄을 터트려서 확인시켜줄수도 있을텐데...그리고 핵분열기폭시험이라면 핵분열방사능물질이 나와야 되는데 나오지도 않았으므로 본인은 이것은 주핵융합시험이라고 본다. 위내용은 이번 테스트에대한 일반적인 시험의 정체에대한 폄훼인데...대부분의 미국전문가라 칭하는 자들의 시각입니다.
정론직필님이 공지한 "미국 정보당국이 북한의 4차 핵실험 결과를 초기 분석한 결과, 2단계 수소탄으로서, 북한은 수소탄 초소형화 달성으로 결론"에서 언급된 원문 글을 소개코자 하는 목적으로 게시하였네요. 추가로, 1월3일 김정은이 서명하면서 1월6일 시험날짜를 지정한 성명서 사진과 함께 최종 보고서 수표지는 수기로 작성하고 서명하는 점도 특이해 보입니다.
첫댓글 howcome you bring it here?
what"s your point?
is there anything special?
Do you know it could make many people sick?
It"s not comfortable to see all english page.
please, give us a peace
feeling about this is like this picture without explain
북한이 진짜수소폭탄을 개발했나보네...소형이니(그들의 추정, 5kt-7kt) 수소폭탄기폭시험(통상적으로 핵분열탄)한것인줄 착각하고 있네...그런데 북한에서 큰규모의 핵/수소탄테스트는 국토가 작아서 하기힘들다. 이란 같이 넓은 사막이 있으면 시원하게 메가톤급으로 지상수소탄을 터트려서 확인시켜줄수도 있을텐데...그리고 핵분열기폭시험이라면 핵분열방사능물질이 나와야 되는데 나오지도 않았으므로 본인은 이것은 주핵융합시험이라고 본다. 위내용은 이번 테스트에대한 일반적인 시험의 정체에대한 폄훼인데...대부분의 미국전문가라 칭하는 자들의 시각입니다.
그리고 6kt이상이면 융합본시험이라고 본다면서 기폭제시험이라고 보는것도 잘못되었네요. 최소한으로 끌어내려서 5kt-7kt으로추정하고 경계치라서 지멋대로 기폭제시험이라고 하는것인가? 다른데서는10kt을 넘는다는 추정도 있는디...핵분열기폭제라면 기체방사능물질이 포집되어야 하는데 안되니...이것은 핵융합본시험이다. 기폭제로는 아마 알려지지않는 특별히 설계된 특수폭약일듯 싶다. 그렇게되면 유해방사능물질이 나오지않는 순수수소폭탄이 되는것이다.
정론직필님이 공지한 "미국 정보당국이 북한의 4차 핵실험 결과를 초기 분석한 결과, 2단계 수소탄으로서, 북한은 수소탄 초소형화 달성으로 결론"에서 언급된 원문 글을 소개코자 하는 목적으로 게시하였네요.
추가로, 1월3일 김정은이 서명하면서 1월6일 시험날짜를 지정한 성명서 사진과 함께 최종 보고서 수표지는 수기로 작성하고 서명하는 점도 특이해 보입니다.
고맙습니다