'Chaotic' scenes as Ramadi residents seek refuge in Baghdad

The US defence secretary has accused the Iraqi army of lacking the will to fight, saying it is a major reason why Islamic State (IS) militants have been able to advance.

Ashton Carter said the army had vastly outnumbered the militants in Ramadi, but had not tried to defend the city against the IS attack, in which about 500 people were killed and some 40,000 were forced to flee.

Residents of the city are continuing to flee, and the BBC's Omar Abdel Razek has been at a river crossing where thousands are waiting to be allowed to continue towards Baghdad.