Dropping the atomic bombs vs. an American invasion of Japan

[Sestak]

Dropping the bombs probably saved more lives during the war. It wasn't a good course of action, of course, just the least bad one.

Not to mention, as some others have pointed out, the sheer destruction caused by the two bombs has probably disuaded use of nuclear weapons - including modern ones that are much more powerful - across the world.

Again, a horrible decision both ways.