A former war reporter returns to Cambodia

Neak Leung, Cambodia

In Cambodia, today is a somber anniversary. On this day in 1975, a guerrilla movement that had come to be known as the Khmer Rouge swept into the capital, Phnom Penh. It was the start of a brutal four-year rule, during which one-quarter of the population died.

Journalist Dan Southerland covered the war in Indochina for the American newspaper, The Christian Science Monitor. Southerland returns to Cambodia from time to time, part of his attempts to make sense of the devastation. On a journey across the Mekong River nearly 40 years later, memories of the past are never far from the surface.

Dan Southerland looks at a photo on the wall of Phnom Penh's Tuol Sleng genocide museum.