The plan to cut off the city of Raqqa, the capital of the self-proclaimed Islamic State, could begin as early as “two weeks,” a U.S. defense official told The Daily Beast Thursday.

But which troops would eventually enter Raqqa after it is surrounded—and how the U.S.-led coalition would choose which warring allies should be involved in the invasion of Raqqa—have yet to be sorted out. In other words: U.S. military this week may have begun to trumpet the definitive battle to defeat ISIS, but they have yet to finalize the details of how the battle for Raqqa would shake out, defense officials conceded to The Daily Beast. Instead, there are dueling battle plans emerging between purported NATO partners. The U.S.-led coalition is saying that the fight for Raqqa is about to begin, led by Kurdish forces known as the YPG. Turkey, meanwhile, is vowing to stop the YPG.

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