The U.S. has told Iraq’s leaders they must choose between ongoing American support in the battle against militants of the Islamic State of Iraq and Syria (ISIS) and asking the Russians to intervene instead.

Marine Gen. Joseph Dunford, chairman of the Joint Chiefs of Staff, said Tuesday that the Iraqis had promised they would not request any Russian airstrikes or support for the fight against ISIS.

Shortly after leaving Baghdad, Dunford told reporters traveling with him that he had laid out a choice when he met with Iraqi Prime Minister Haider al-Abadi and Defense Minister Khaled al-Obeidi earlier Tuesday. […]