Syria targets children, says UN human rights chief

Syrian authorities are systematically detaining and torturing children, the United Nations' human rights chief, Navi Pillay, has told the BBC.

Ms Pillay said President Bashar al-Assad could end the detentions and stop the killing of civilians immediately, simply by issuing an order.

Syria has accepted a peace plan, amid scepticism about its intentions.

The BBC's Fergal Keane reports.