US Vice-President Joe Biden
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US Vice-President Joe Biden condemns 'Syria's heinous act'

28 August 2013 Last updated at 01:30 BST

US Vice-President Joe Biden has said the Syrian government was clearly responsible for a chemical weapons attack against civilians last week, and that it must be held accountable for the "heinous" act.

"Those who use chemical weapons against defenceless men, women and children should and must be held accountable," he said in a speech to the American Legion, a veterans' group, in Houston.