“Iraq’s ruling alliance and powerful Shi’ite militias have urged Prime Minister Haider al-Abadi to request Russian air strikes on Islamic State militants, who control large parts of the country, members of the coalition and militias told Reuters.”
“Growing pressure on Abadi to seek Russian support puts him in the delicate position of trying to appease his ruling coalition, as well as militias seen as a bulwark against Islamic State, while keeping strategic ally Washington on his side.”
“America’s top general, Joseph Dunford, said on a trip to Baghdad on Tuesday that the United States won assurances from Iraq that it would not seek such strikes.” (Coordination Center)

http://www.reuters.com/article/2015/10/21/us-iraq-russia-idUSKCN0SF0HU20151021