I'm not sure how she ever supported Pol Pot, he left power in 1979 the same year she came to power. Did she and the USA feed the non-communist elements of the Khmer Rouge during the 80s, yes.

Was the African Nationalist Congress (ANC) ever considered a terrorist organ? That might be why Mandela went to jail in the first place.

Pinochet? read some history of the Falkland War to understand Thatcher's treatment of him.

Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats. H. L. Mencken