Angry US warns Serbs after embassy attack

America gave Serbia a blunt warning against inciting violence after an angry mob protesting at the independence declared by its former province of Kosovo stormed and set fire to the US Embassy in Belgrade.

The attack was seen live on television screens around the world and the Bush administration reacted with unusual sharpness, denouncing Serb authorities for failing to protect the compound from rioters who torched part of its main office building.