Trump pledges retaliation after 3 Americans are killed in Syria attack that the US blames on IS

President Donald Trump says “there will be very serious retaliation” after two U.S. service members and one American civilian ...

Trump vows 'serious retaliation' after gunman kills two soldiers, one civilian at US base in Syria

Two US service members and a civilian interpreter were killed in central Syria after a lone gunman, believed to be part of ...