David Cameron urges UN action on Syria

Prime Minister David Cameron has urged world leaders to do more to end the crisis in Syria.

In the keynote speech to the United Nations General Assembly, he cited a recent report documenting torture and murder of children by regime forces, saying "the blood of these young children is a terrible stain on the reputation of this United Nations."

He also pledged a further £7.4m ($12m) in UK humanitarian aid for civilians caught up in the civil war in Syria.

James Landale reports.