Pol Pot was literally China’s man in Southeast Asia. He was taught by the French Communists. Vietnam hated the French (past colonizers), and the Soviets backed the North Vietnamese - and the Chinese disliked the Soviets. Power balance thing within the Communists.

It rarely spilled over directly until Cambodia kept crossing over into Vietnam and murdering people when they got overzealous with their own internal murdering. Eventually Vietnam got fed up and stomped on them.

The CIA hated both of them with a passion.

You have no idea what the hell you’re talking about.

The Khmer Rouge were not communists.

China, the CIA, and MI6 backed them solely because they were against the NVA. They were tools. And they severely lacked an ideological backbone which is why shit go so bad in Cambodia. It was fascism.

Like I said before Wikipedia is average tier knowledge, but sometimes it compounds sources well, so follow the sources: https://en.wikipedia.org/wiki/Allegations_of_United_States_s...

And it would be inline with what it has been proved the US did in that same time frame in Indonesia as well, and for very similar reasons too.