"Nagasakibomb" by Charles Levy from one of the B-29 Superfortresses used in the attack.  <a href="http://www.archives.gov/research/military/ww2/photos/images/ww2-163.jpg" target="_blank">National Archives image (208-N-43888)</a>. Licensed under <a href="https://commons.wikimedia.org/wiki/File:Nagasakibomb.jpg#/media/File:Nagasakibomb.jpg" target="_blank">Public Domain via Commons</a>

The Decision to Drop the A-Bomb

Questioning why the U.S. dropped the a-bomb on Japan.