It installed Change_of_leadership the military dictatorship Control of Carlos Castillo Armas , the first in a series of U.S.-backed authoritarian rulers in Guatemala .

Nearly four decades of civil war followed , as leftist guerrillas fought Hostile_encounter the series of U.S.-backed authoritarian regimes whose brutalities include a genocide of the Maya peoples .

During the Vietnam War , Vietnamese and Cambodian communists had formed Coming_to_be an alliance to fight Hostile_encounter U.S.-backed regimes in their respective countries .