U.S. and U.K. special operations forces are nearby training Syrian rebel fighters by the border of Iraq and Jordan.

From Reuters:

The U.S. military carried out an air strike on Thursday against militia supported by the Syrian government who had moved against U.S.-backed fighters in the country’s south, a U.S. official told Reuters on Thursday.

The official, who spoke on condition of anonymity, said the strikes took place near the town of At Tanf and followed warning shots by U.S. aircraft meant to dissuade the fighters.