Author and historian Iain MacGregor profiles a diverse range of players in his latest book about the first atomic bomb used in warfare.

Masako Wada urged policymakers around the world to 'take the leadership ... toward human society free of nuclear weapons.' ...

Nuclear deterrence “cannot save humanity,” a senior member of a group of hibakusha atomic bomb survivors in Japan, said in a video speech at a meeting of scientists in Chicago on Wednesday.