The U.S. conducted a drone strike in Iraq on Dec. 3, as the American troops there continue to be targeted by Iranian-backed militants. The strike took place near Kirkuk as the militants were preparing to attack U.S. troops in northern Iraq, a U.S. official told Air & Space Forces Magazine. A half dozen airstrikes have been carried out by the U.S. against Iranian-aligned militias in Iraq and Syria in roughly five weeks, but this appears to be first one known to have been carried out by a drone.