U.S., China, South Korea urge nations to lock down nuke

SEOUL, South Korea (AP) -- The leaders of South Korea, the United States and China issued stark warnings Tuesday about the threat of nuclear terrorism during the final day of a nuclear summit that has so far been upstaged by North Korea's long-range rocket launch plans.

Nearly 60 leaders have gathered for the two-day conference meant to find ways to keep terrorists from detonating an atomic weapon in a major city. The leaders were to release a communique Tuesday about their efforts to lock down the world's supply of nuclear material by 2014.

Much of the drama, however, has centered on North Korea's stated plans to launch a satellite on a long-range rocket around the April 15 celebration of the birthday of North Korean founder Kim Il Sung.

President Barack Obama and South Korean President Lee Myung-bak on Monday pressured China, Pyongyang's main ally and economic supporter, to use its leverage to persuade the North to back away from the launch. Read More