Wait a minute-- history shows that Kissinger and Zbigniew Brzezinski both said they regarded Pol Pot and the Khmer Rouge as murderous thugs, but were pragmatic and prepared to improve relations with them (because they also were fighting the Vietnamese.) In fact, the USA winked, semi-publicly at Chinese and Thai aid to the Khmer Rouge. So some say the US was complicit in the killing fields and 3 million deaths. America continually supported UN recognition of the shadow Coalition Government of Democratic Kampuchea (CGDK, formed in 1982) as the legitimate Cambodian government, even though it was an alliance including the Khmer Rouge.