Obama calls North Korea nuclear test a threat to US - USA TODAY

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Obama calls North Korea nuclear test a threat to US USA TODAY President Obama calls for swift and credible action; China and Russia also condemn the test. korea. This April 18, 2012 satellite image appears to show a train of mining carts, at the lower center of the frame, and other preparations underway at North Korea's ... North Korea: Nuke test just a "first response" aimed at USCBS News North Korea's latest nuke stunt signals country closer to missile capability -- expertsFox News N. Korea's nuclear test raises tension, shows progress toward viable weaponWashington Post CNN -Voice of America -The Guardian all 728 news articles »