Families of victims of the Khmer Rouge regime broke down in tears as two top leaders were sentenced to life in prison for crimes against humanity.
At least two million people are thought to have died between 1975-79 during the regime's rule.
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Rain will affect most of the UK today, with Scotland remaining largely fine and brighter spells appearing in the east and south.
In a searingly emotive address, the president cast Hillary Clinton as the most qualified candidate to unify America as next US president.
The release is the second batch in a series of leaks that have rattled the Democratic Party.