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AP quoted security officials in Anbar who said they found 48 bodies of executed Sunni policemen and civilians over the weekend.
Many analysts will also be looking to a meeting of Oil Producing and Exporting Countries (OPEC) in November.
Meanwhile, Senator Elizabeth Warren, senior Democrat from Massachusetts, said that while she agrees IS is a threat, she does not believe Obama's strategy adequately serves US interests.
Ankara responded by saying the "two countries will continue to fight terrorist organizations in the region as in the past".
The extremist group now appears to be trying to capture as much territory as possible in what it says will form an Islamic state.
The UN Resolution cited that as a splinter faction of Al-Qaeda, ISIL was subject to existing sanctions restricting access to funds and materiel.
In late July, Mosul was emptied of its Christian minority for the first time in more than 1,800 years.
With their fighters entrenched in Mosul and most of Nineveh, the former Al-Qaeda affiliates now effectively control a third of Iraq.
Iraq has already received Sukhoi jets from Russia.