North Korea declares H-bomb test 'a perfect success'

Kim Jong-Un Photograph:( Reuters )

Seoul, South Korea Sep 03, 2017, 12.42 PM (IST)

North Korea said Sunday it tested a hydrogen bomb which it can mount on a missile, declaring its biggest-ever nuclear detonation a "perfect success" and sparking a strong rebuke from President Donald Trump who slammed its actions as "dangerous" to the US.

Pyongyang residents threw their arms aloft in triumph as a jubilant television newsreader hailed the "unprecedentedly large" blast.

It "marked a very significant occasion in attaining the final goal of completing the state nuclear force", she added.

The test 'marked a very significant occasion in attaining the final goal of completing the state nuclear force', the newsreader said
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But world reaction to the country's sixth nuclear test was swift and angry. China rebuked its ally and began emergency monitoring for radiation at its border with the North.

Trump said on Twitter Pyongyang's "words and actions continue to be very hostile and dangerous to the United States".

He branded the North "a rogue nation which has become a great threat and embarrassment to China, which is trying to help but with little success".

Hours before the test the North released images of leader Kim Jong-Un at the Nuclear Weapons Institute, inspecting what it said was a miniaturised H-bomb that could be fitted onto an intercontinental ballistic missile (ICBM).

China lost no time in issuing "strong condemnation" of the test, which overshadowed the opening of the BRICS summit in Xiamen by leader Xi Jinping.

Japanese Prime Minister Shinzo Abe described it as "absolutely unacceptable" while Russia's foreign ministry expressed "strongest condemnation" but urged calm.

In Seoul, President Moon Jae-In called for new United Nations sanctions to "completely isolate North Korea" and said the South would discuss deploying "the strongest strategic assets of the US military".

That could be taken as a reference to tactical nuclear weapons, which were withdrawn from South Korea by Washington in 1991. 

The US and South Korean military chiefs spoke by telephone and agreed the test was "a provocation that cannot be overlooked", Seoul's defence ministry said in a statement.

The chairmen of the joint chiefs of staff, General Jeong Kyeong-Doo and General Joseph Dunford, "agreed to prepare a South Korea-US military counteraction and to put it into action at the earliest date."

US monitors measured a 6.3-magnitude tremor near the North's main testing site, which South Korean experts said was five to six times stronger than that from the 10-kiloton test carried out a year ago.

The tremor was felt in northeastern China, with people in the border city of Yanji saying they fled their homes in their underwear, and in the Russian Pacific city of Vladivostok.

Whatever the final figure for test's yield turned out to be, said Jeffrey Lewis of the armscontrolwonk website, it was "a staged thermonuclear weapon" which represents a significant advance.

Chinese monitors said they had detected a second tremor shortly afterwards of 4.6 magnitude that could be due to a "collapse (cave in)", suggesting the rock over the underground blast had given way.

- 'Super explosive power' -
Pyongyang triggered a new ramping up of tensions in July, when it carried out two successful tests of an ICBM which apparently brought much of the US mainland within range.

It has since threatened to send a salvo of rockets towards the US territory of Guam, and last week fired a missile over Japan.

Trump has warned Pyongyang that it faces "fire and fury" and that Washington's weapons are "locked and loaded".

Analysts believe Pyongyang has been developing weapons capability to give it a stronger hand in any negotiations with the US.

"North Korea will continue with their nuclear weapons programme unless the US proposes talks," Koo Kab-Woo of Seoul's University of North Korean Studies told AFP.

Pictures of Kim at the Nuclear Weapons Institute showed the young leader, dressed in a black suit, examining a metal casing with a shape akin to a peanut shell.

The device was a "thermonuclear weapon with super explosive power made by our own efforts and technology", the Korean Central News Agency cited Kim as saying, and "all components of the H-bomb were 100 percent domestically made".

Despite its power there were no radioactive leaks from the test, KCNA said in a later report.

Analysts cautioned that the images had not been verified.

"We don't know if this thing is full of styrofoam, but yes, it is shaped like it has two devices," Melissa Hanham of the Middlebury Institute for International Studies in California said on Twitter.

- Failure of sanctions -
Pyongyang, which says it needs nuclear weapons to defend itself, carried out its first atomic test in 2006.

Its fifth detonation, in September last year, caused a 5.3 magnitude quake and according to Seoul had a 10-kiloton yield -- still less than the 15-kiloton US device which destroyed Hiroshima in 1945.

The North has been subjected to seven rounds of United Nations Security Council sanctions over its nuclear and ballistic missile programmes, but always insists it will continue to pursue them.

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