Japanese Prime Minister Shinzo Abe, right, and U.S. Ambassador to Japan John V. Roos meet at Abe's official residence in Tokyo following North Korea's nuclear test, Tuesday, Feb. 12, 2013. Defying U.N. warnings, North Korea on Tuesday conducted the underground nuclear test in the remote, snowy northeast, taking a crucial step toward its goal of building a bomb small enough to be fitted on a missile capable of striking the United States. (AP Photo/Kyodo News) JAPAN OUT, MANDATORY CREDIT, NO LICENSING IN CHINA, HONG KONG, JAPAN, SOUTH KOREA AND FRANCE less