Arab leaders unveil joint force, vow strikes in Yemen will continue until rebels withdraw

SHARM EL-SHEIKH, Egypt - A two-day Arab summit ended Sunday with a vow to defeat Iranian-backed Shiite rebels in Yemen and the formal unveiling of plans to form a joint Arab intervention force, setting the stage for a potentially dangerous clash between U.S.-allied Arab states and Tehran over influence in the region. Arab leaders taking turns to address the gathering spoke repeatedly of the