The inherent corruption of the illegal US invasion of South Vietnam created the conditions on the ground that resulted in Pol Pot's war crimes:The Cambodians can solve their own problems. They don't need condescending assholes from the western world telling them how to do things.
Most of the people who demand things be a certain way make me ill
That attitude is what allowed the Khmer Rouge to take over, asshole.
No, it isn't - it was Chinese support for the early incarnations of the Khmer which allowed them to take over, along with the inherent corruption of the previous government in Phomn Penh.
"President Nixon and his National Security Adviser, Henry Kissinger, discuss North Vietnamese sanctuaries and supply routes in the neutral border country of Cambodia.
"General Creighton Abrams, the US military commander in South Vietnam, wants those sites bombed, regardless of the fact that military strikes against locations in a neutral country would be flagrant violations of international laws and treaties.
"Abrams has assured the White House that no Cambodian civilians live in those areas—a false assertion.
"Nixon orders Kissinger to come up with a plan for bombing Cambodia. Kissinger, his military aide Alexander Haig, and Nixon’s chief of staff H. R. Haldeman develop the basic plan in two days.
"The first wave of bombings will begin three weeks later (see March 15-17, 1969). Nixon’s secret bombings of Cambodia—dubbed 'Operation Menu'—will trigger a wave of global denunciations, further energize the antiwar movement, and help precipitate the leak of the 'Pentagon Papers' (see March 1971)."
'Operation Menu'
Hundreds of thousands of innocent civilians were murdered, maimed, or made homeless by the carpet bombing of Laos and Cambodia; that's where the impetus for Pol Pot's "Year Zero" atrocities came from.