The U.S. has launched airstrikes against a group of pro-Syrian government forces who were amassing near a U.S. military base in southern Syria where U.S. soldiers train Syrian opposition forces fighting ISIS. The coalition says the airstrikes destroyed artillery and an anti-aircraft weapon, but did not say whether it had killed or injured any soldiers. It’s the second time the U.S. has launched airstrikes against pro-Syrian government forces near this U.S. military base. In a statement, the U.S.-led coalition said, “The Coalition does not seek to fight Syrian regime or pro-regime forces but remains ready to defend themselves if pro-regime forces refuse to vacate the de-confliction zone.”