The operation to retake Mosul from Islamic State forces is proof of the quote “no battle plan survives contact with the enemy.”

Just ten days into the Mosul offensive, military planners are accelerating their timeline to try to take the Syrian city of Raqqa, ISIS’ self-proclaimed capital, because they’re seeing lots of traffic going from Mosul to Raqqa.

Complicating matters are the various alliances and interests of U.S.-led coalition partners that intersect and overlap with one another. For example, the Syrian Democratic Forces (SDF) would be helpful in any coalition move on Raqqa. But Turkey sees the SDF in alliance with the outlawed Kurdistan Workers Party (PKK), which the United States classifies as a terrorist organization.

Meanwhile, Turkey wants a role in the Mosul operation to protect the rights of ethnic Turks there. Iraq’s prime minister has ruled that out.

About 30,000 Iraqi troops along with about 3,000 Kurdish peshmerga forces are on the front lines of the Mosul offensive. The U.S. has as many as 200 special operations troops on the ground embedded in an advise and assist role and is leading the coalition air support.

Perhaps the most critical job the U.S. has is keeping the disparate factions focused on the mission and avoiding diplomatic distractions.