You would never be able to enjoy it or explain how you got it. Someone would eventually noticed all this money went missing from a bank and there is some rando with all this money with the same serial numbers on it spending.
I like my plan. You could even leave notes on the dead bodies of the dictators. Or leave warnings. Imagine Winnie the Pooh blinks and there is a knife on his desk with a note telling him that you want the genocide to stop.