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The yields of the North’s 2006 and 2009 tests were estimated at 1 kiloton and 2 to 6 kilotons, respectively, spokesman Kim Min-seok said. By comparison, U.S. nuclear bombs that flattened Nagasaki and Hiroshima during World War II were estimated at 13 kilotons and 22 kilotons, respectively, Kim said.
The test is a product of North Korea’s military-first, or songun, policy, and shows Kim Jong Un is running the country much as his father did, said Daniel Pinkston of the International Crisis Group think tank.
Obama calls NKorea nuke test ‘highly provocative’
President Barack Obama on Tuesday called North Korea’s latest nuclear test a “highly provocative act” that threatens U.S. security and international peace.
“The danger posed by North Korea’s threatening activities warrants further swift and credible action by the international community,” Obama said in a statement issued early Tuesday. “The United States will also continue to take steps necessary to defend ourselves and our allies.”
North Korea said it successfully detonated a miniaturized nuclear device at a northeastern test site Tuesday. South Korean, U.S. and Japanese seismic monitoring agencies said they detected an earthquake in North Korea with a magnitude between 4.9 and 5.2.
North Korea’s official Korean Central News Agency said the test was conducted safely but with “great explosive power.” It said the test is aimed at coping with “ferocious” U.S. hostility that undermines the North’s peaceful, sovereign right to launch satellites.
“These provocations do not make North Korea more secure,” Obama said. “Far from achieving its stated goal of becoming a strong and prosperous nation, North Korea has instead increasingly isolated and impoverished its people through its ill-advised pursuit of weapons of mass destruction and their means of delivery.”
Defense Secretary Leon Panetta, in remarks Tuesday morning to Pentagon workers gathered in the building’s courtyard, said the U.S. is going to have to continue to deal with rogue states like North Korea.
The decision to push ahead with a test will be a challenge to the U.N. Security Council, which recently punished Pyongyang for launching the December long-range rocket. In condemning that launch and imposing more sanctions on Pyongyang, the council had demanded a stop to future launches and ordered North Korea to respect a ban on nuclear activity — or face "significant action" by the U.N.
U.N. chief Ban Ki-moon condemned the test in a statement. The Security Council held an emergency meeting to discuss the nuclear test, and several ambassadors said they expected strong criticism.
China expressed firm opposition to the test but called for a calm response by all sides. Chinese Foreign Minister Yang Jiechi summoned North Korea’s ambassador and delivered a "stern representation" and demanded that North Korea "swiftly return to the correct channel of dialogue and negotiation," the ministry said in a statement.
The other part of a credible North Korean nuclear deterrent is its missile program. While it has capable short and medium-range missiles, it has struggled in tests of technology for long-range missiles needed to carry bombs to the United States, although it did launch the satellite in December.
North Korea isn’t close to having a nuclear bomb it can use on the United States or its allies. Instead, Hecker said in a posting on Stanford University’s website, "it wants to hold U.S. interests at risk of a nuclear attack to deter us from regime change and to create international leverage and diplomatic maneuvering room."
Associated Press writers Kim Kwang Hyon in Pyongyang, North Korea; Foster Klug, Hyung-jin Kim, Youkyung Lee and Sam Kim in Seoul, South Korea; Yuri Kageyama and Malcolm Foster in Tokyo; and Christopher Bodeen in Beijing contributed to this report.
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