Cambodia on Tuesday marked 50 years since the country's communist Khmer Rouge launched a four-year reign of terror that killed an estimated 1.7 million people.
On Cambodia's annual Day of Remembrance, about 2,000 people attended a ceremony honouring the victims of the Khmer Rouge genocide at Choeung Ek, a site of one of the most notorious "killing fields" — about 15 kilometres south of the capital Phnom Penh.
