Kurds in northern Syria who woke to deadly Turkish air strikes overnight expressed fear and anger on Sunday, accusing the United States of abandoning them after they spearheaded the fight against the Islamic State group.In the small city of Al-Malikiyah, in Syria's far northeastern corner, shops were closed and streets were deserted."We are scared because we've already been through this," said Mohammed Rajab, who already fled the northern city of Afrin during a Turkish offensive four years ago.