Air strikes kill 400 civilians

International coalition air strikes against Islamic State in Iraq and Syria are believed to have killed more than 400 civilians, according to a new report. For a year the US-led air campaign has tried to halt the spread of Islamist militancy in the two countries, targeting thousands of positions linked to Islamic State and the Khorasan group, a smaller group affiliated to al-Qaeda that officials say is plotting attacks in Europe and the US.