"US bombing of Cambodia" . "*Khmer Rouge used civilian loss to promote recruitment, strengthened the hard-liners within theCPK" . . "bombing of Cambodia" . "intensified U.S. bombing" . . "bombing of" . "1970-05-19" . . "Khmer Rouge" . "bombing campaign" . . . . . . . . . . "*Delaying the fall of the capital Phnom Penh to theKhmer Rouge" . "*Pushing North Vietnamese troops further into Cambodia away from the South Vietnamese border" . "lasted until 1973" . . . . "*In U.S., adoption of theWar Powers Resolution" . . . . "American bombing in Cambodia" . . "Operation Freedom Deal" . "Commando Hunt VI" . . . "American bombing campaigns" . "Freedom Deal" . . "Commando Hunt V" . . "Operation Freedom Deal" . "*Accelerated collapse of rural Cambodian society, displacement of tens of thousands from countryside to city, increased social polarization" . "Cambodia" . . . . . . .