Nuklear bomb

[Igo kyu]

Originally Posted by SYN_Bliss

The cruelest thing that happened in the war is what started it.

The invasion of Poland?

The deaths of about 5,000 at Pearl Harbour? Wikipedia says less than that:

2,402 personnel were killed[9] and 1,282 were wounded.

http://en.wikipedia.org/wiki/Attack_on_Pearl_Harbor

Pearl Harbour was unexpected, and the Japanese made a complete mess of their Declaration of War that was supposed to precede it, but in actuality was completed after the raid, but there's no way that's the worst thing that happened in WW2.