In Pacific, rising tensions evoke troubling nuclear legacy

FILE – In this May 21, 1956 file photo, the stem of a hydrogen bomb, the first such nuclear device dropped from a U.S. aircraft, moves upward through a heavy cloud and comes through the top of the cloud, after the bomb was detonated over Namu Island in the Bikini Atoll, Marshall Islands. Bikini Atoll in the Marshall Islands remains contaminated by radiation, part of a troubling nuclear testing legacy that continues to affect islands and people across the Pacific long after the U.S., Britain and France stopped their testing programs there. (AP Photo, File)