I can't believe so many people still think that U.S. forces killing 1 million japanese civilians (~400k in the bombings, plus ~600k from the firebombs) was necessary.
The Japanese were begging to surrender, and Truman changed his story several times which makes it obvious it wasn't necessary to save American lives. Dropping the bomb actually cost more American lives than not dropping it because American POWs were killed. They would've been released had Truman chose to end the US military campaign there, but truman decided it was better to kill people because he believed them to be subhuman rather than to spare the lives of Americans.
Truman and the people working on the manhattan project should've been executed for treason.