History of US-Cambodia relations -
1970 - CIA aids Lon Nol coup against government. US invades Cambodia. US kills 4 student protesters against invasion at Kent State, 2 at Jackson State
1970-1973 Operation Freedom Deal, US drops 250,000 tons of bombs on Cambodia
1975 King Sihanouk, overthrown by CIA assisted coup in 1970 returns to power, in coalition with communists. The destabilization of the country by the US is what is seen to help bring the communists to power
1979 Split in Cambodian communists, Vietnamese-aligned side comes to power. US immediately begins to arm the coalition of Sihanouk and the so-called "Khmer Rouge". The US also fights to keep the Khmer Rouge coalition as Cambodia's UN representatives. The New York Times reports on the arms shipments in the early-mid 1980s
[...]
"2010s we helped Cambodia transition into a democracy"