http://forum.calgarypuck.com/showthr...ight=hiroshima
http://seattletimes.nwsource.com/spe...nt/procon.html
Historians are still divided over whether it was necessary to drop the atomic bomb on Japan to end World War II. Here is a summary of arguments on both sides:
Over-kill:
Japan was ready to call it quits anyway. More than 60 of its cities had been destroyed by conventional bombing, the home islands were being blockaded by the American Navy, and the Soviet Union entered the war by attacking Japanese troops in Manchuria.
This seems to be the strongest justification IMO:
Immediate use of the bomb convinced the world of its horror and prevented future use when nuclear stockpiles were far larger