Turkey says campaign against U.S.-backed Kurdish force in Syria will be swift

By Mert OzkanHASSA, Turkey (Reuters) - Turkey shelled targets in northern Syria on Monday and said it would swiftly crush the U.S.-backed Kurdish YPG fighters who control the Afrin region, amid growing international concern over its three-day-old military operation.Turkish forces and their Syrian rebel allies began their push to clear YPG fighters from the northwestern enclave on Saturday, opening a new front in Syria's civil war despite calls for restraint from United States.France has called f