The United Nations has warned that up to 30,000 people are still facing a "potential genocide" on a mountain in northern Iraq.
The UK has airdropped a third round of relief supplies, including water and shelter kits, while the US carried out a sixth delivery of food and water to civilians trapped on Mount Sinjar overnight.
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Some Iraqis have managed to escape to camps in the Syrian Kurdish town of Malikiya, 20 miles from the border.
