US Defence Secretary Ashton Carter says the rout of Iraqi forces at Ramadi showed they lacked the will to fight against Islamic State.
A UN conference aimed at preventing the proliferation of nuclear weapons ends in failure after a row over a nuclear-free Middle East proposal.
IS militants enter Palmyra's museum and place guards outside its doors, days after seizing the ancient city, Iraqi officials say.
Threat to Palmyra v human suffering: not a zero-sum game
How does Islamic State govern an area the size of Belgium?
The challenge of assessing Syria chemical weapons
Shortcomings of the campaign against Islamic State
How Islamic State makes its 'Caliphate' work
How do you protect artefacts from wanton destruction?