“On Wednesday, the U.S. military said two F-15E jet fighters carried out an airstrike to destroy an ammunition-storage facility, latrines, tents and other parts of the Syria headquarters of the American campaign to destroy Islamic State after pulling its forces from the base,” the Wall Street Journal reports.

“The decision to target the base, which included warehouses used to train-and-equip the Kurdish-led fighters, came after Turkish-backed forces moved on the facility on Tuesday.”