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The jihadist group carries out abductions, rapes, beheadings and stonings in the areas under its influence.
Syrian Foreign Minister seized on the proposal, saying it was "better late than never".
Turkey objects to empowering those militias
Islamic State is now within 2 km (1.2 miles) of government-held territory on the northern edge of Aleppo
Washington has accepted 1,500 Syrian refugees since the start of the Syrian war in 2011
“I know that picture will wake up the whole world. We have to help people."
The Free Syrian Army says it has captured villages around Kobani, which were being held by Islamic State militants.