Forty years ago today, some 100,000 Vietnamese soldiers accompanied by almost 20,000 Cambodian defectors marched into Phnom Penh to overthrow the radical Maoist Khmer Rouge regime.
The invading forces found less than 100 survivors in the capital city. The Khmer Rouge, which came to power in 1975, had evacuated Phnom Penh, leaving buildings to decay and collapse.
In full: http://www.atimes.com/article/how-vietnam-lost-and-china-won-cambodia/
