North Korea
N.Korea blast 'roughly congruent' with earlier tests: CTBTO
Feb. 12, 2013
North Korea's blast was similar to previous nuclear tests, the Vienna-based monitoring agency CTBTO said early Tuesday, slamming it as a potential threat to international security."The event shows explosion-like characteristics and its location is roughly congruent with the 2006 and 2009 DPRK (Democratic People's Republic of Korea) nuclear tests," agency chief Tibor Toth said in a statement. "For now, further data and analysis are necessary to establish what kind of event this is," he added."If