A Histoy lesson. Well worth 5 minutes
As always when reading history; "facts" are "events of high probability" and "conclusions" are "interpretations".
These are my interpretations of the events. Feel free to interpret differntly:
* The bombs did nothing to help the ending of the war
* The first bomb was dropped for testing, to justify the budget for the Manhattan project and to intimidate the Soviets.
* The second bomb was just plain murder. If it had been dropped on the original target, it may have been justifiable as testing of a new type of target.
But as Rex already pointed out. If the (first) bomb hadn't been dropped, its very doubtfull we would have made it through Korea and the cold war without the bomb beeing dropped somewhere else.