U.S. weighs new support for Syrian rebels against Islamic State

By Phil Stewart, Arshad Mohammed and Julia Edwards WASHINGTON (Reuters) - The United States is considering extending support to thousands of Syrian rebel fighters, possibly with arms and air strikes, to help them push Islamic State from a strategic pocket of Syrian territory along the Turkish border, U.S. officials say. U.S. backing for the plan would come as moderate rebels in Syria, some trained and backed by the United States, say they have been targeted by Russian air strikes, raising tensio