Khmer Rouge on trial: 4 former leaders in court

The UN-backed trial of four surviving top-ranking Khmer Rouge officials has begun. The regime was responsible for the deaths of up to 2 million Cambodians in the late 1970s, although the court is currently held up with formalities and technical issues. Evidence won't start being heard until September; but given the age of the defendants, they might not live to see the end of what's likely to be a long and protracted legal hearing.