South Korea Reacts To North's Third Nuclear Test

SEOUL, SOUTH KOREA - FEBRUARY 12: Special metropolitan police patrol at the U.S. embassy on February 12, 2013 in Seoul, South Korea. North Korea confirmed it had successfully carried out an underground nuclear test, as a shallow earthquake with a magnitude of 4.9 was detected by several international monitoring agencies. South Korea and Japan both assembled an emergency meeting of their respective national security teams after the incident. (Photo by Chung Sung-Jun/Getty Images)