9/11 is the worst terrorist act to happen in one shot (plus two lesser in number) to non-combatant civilians in history.
How many MILLIONS did the Japanese kill? Not to mention mass rapes, torture, and 'medical experiments' so horrid their German allies were taken aback.
Those two nukes SAVED an estimated two million estimated that would have been killed in a planned ground assault with American and British forces.
Mind you, they were warned, ignored it, got nuked, ignored that, then got nuked again and sat their asses down. End of war.