And hindsight is always 20/20 too.
Truman did what he thought was right, and in all honesty it probably was right at the time.
As has been demonstrated in the wars fought since, bring the war to the home front for those on the losing side brings the war to a conclusion much more quickly.
Check this out:
It’s amazing when we consider Truman didn’t even know the bomb existed. He was kept out of the “know.” Only found out after Roosevelt died. The bomb was originally intended for Nazi Germany. Fortunately, they surrendered in May.