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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The PM will demand faster action from Google, Facebook and Twitter as world leaders set them a deadline and warn of fines for inaction.
Boris Johnson's failed coup achieves what the Prime Minister could not do her for herself - he has strengthened her position.
Wet and windy weather spreading across northern and some western parts, with some heavy rain likely across Northern Ireland and Scotland.