1.   Asked about his family, he said only that he had lost relatives during the Vietnamese invasion that toppled the Khmer Rouge government.

2.   After they were driven from power by a Vietnamese invasion, the Khmer Rouge regrouped as a jungle insurgency, continuing to enforce Communist rule in areas they controlled.

3.   The Vietnamese invasion and occupation of Cambodia and a border war against our former Chinese allies in the north sapped resources.

4.   These numbers have hardly risen in the two decades since the Khmer Rouge were driven from power by a Vietnamese invasion.

5.   They were driven from power by a Vietnamese invasion.

6.   A Vietnamese invasion toppled the group from power.

7.   A Vietnamese invasion drove them from power, but the guerrillas continued a war of resistance that ended only last year.

8.   After fleeing the Vietnamese invasion, the Khmer Rouge waged a long guerrilla war that finally collapsed only last year.

9.   After the Khmer Rouge were overthrown by a Vietnamese invasion, they waged a guerrilla war on the new regime.

10.   After repeatedly attacking villages in Vietnam, the Khmer Rouge were driven from power by a Vietnamese invasion.