Correction.
WW2 was started by no less than 2 insane dictators, with the blueprint of the events to follow set in the secret pact of the MRP [1].
One of them ended up on the victors' side and the regime continuing to bring terror, misery and economic ruin to parts of Europe for a half century.
[1] https://en.wikipedia.org/wiki/Molotov%E2%80%93Ribbentrop_Pac...