Did you hear Joe Cirincione on Fox news this morning, Oct. 9, 2006 commenting on N. Korea nuclear test? Mr. Cirincione implied that it takes a long time from the test of a nuclear device to building an actual weapon.
The USA tested the world’s first atomic bomb on July 16, 1945. The first atomic, bomb ( U235) was dropped on August 6, 1945. The second bomb was dropped at Nagasaki on August 9, 1945 was a plutonium bomb.