In the past five weeks, U.S. forces in Syria have struck directly at the Assad regime and its allies in Syria no less than four times. On May 18, U.S. warplanes struck regime and allied militia forces that breached a 34-mile exclusion zone around a U.S. outpost in southeastern Syria. Then on June 8 and June 20, the United States shot down Iranian-made drones as they approached the outpost.
But the most dramatic event so far was the June 18 downing of a Syrian air force Su-22 by a U.S. Navy F/A-18 Super Hornet. This took place after regime forces attacked a town held by the U.S.-aligned Syrian Democratic Forces (SDF) near Tabqa, in northern Syria. The Su-22 dropped bombs near the SDF fighters, ignored U.S. warnings, and was then shot down.