World As Hiroshima bombing turns 75, a look at 6 changes to nuclear arms under Trump August 4, 2020August 6, 2020Kim Hjelmgaard, USA TODAYComments Off on As Hiroshima bombing turns 75, a look at 6 changes to nuclear arms under Trump On Aug. 6, 1945, the U.S. dropped an atomic bomb nicknamed "Little Boy" over Hiroshima, Japan, instantly killing 70,000 people. By 1950, 200,000 died.