US airdrops aid to thousands trapped by IS militants

US military aircraft have been dropping food and water to tens of thousands of people trapped on a mountaintop by Islamic State (IS) militants near the northern Iraqi town of Sinjar.

It has been reported that around 30,000 of 50,000 Yazidi Kurds, Christians and minority groups have received aid. 

The Islamic State considers the Yazidis to be "devil worshippers".

US President Barack Obama expressed his outrage at the situation: "We have begun a humanitarian effort to help those Iraqi civilians…