The Pentagon says a U.S. jet shot down a Syrian fighter jet during an attack on Syrian Democratic Forces. A statement from U.S.-led coalition fighting ISIS says the encounter started when a town held by Syrian Democratic Forces came under attack by Pro-Syrian regime fighters Sunday afternoon.  During the fight, a Syrian jet dropped bombs near the Syrian Democratic Forces so a U.S. F/A-18E Super Hornet shot it down.  

The statement notes that the coalition is not looking to fight the Syrian regime, its Russian allies or those fighting on the regime's behalf, but the coalition won't hesitate to defend its own partners in the region.