Trump vows “serious retaliation” against ISIS terrorists in Syria

President Trump is putting Islamic State terrorists on notice. The president has announced, what he’s calling, a “very serious retaliation” campaign against ISIS strongholds in Syria. Writing on his social media platform, he warned terrorists who attack Americans that “you will be hit harder than you have ever been hit before.” His comments came as the Pentagon launched dozens of military strikes against the Islamic State following last weekend’s ambush killings of three Americans in Syria.