Lebanon launched a massive public health initiative on Friday to vaccinate all children under five against polio, following a confirmed outbreak of the crippling disease last month in neighboring war-torn Syria. The task is a daunting one in Lebanon, where more than 800,000 refugees...

World powers failed Tuesday to set a date for a long-delayed Syria peace conference, as deep divisions persisted between rival camps over the conditions for their participation. "We were hoping that we'd be in a position to announce a date today, unfortunately we're not," UN-Arab...

Syria has become al Qaeda’s largest safe haven, with more than 10,000 fighters who outnumber the terrorist network’s core organization in Pakistan and its affiliates in North Africa and the Arabian Peninsula. The development, analysts say, provides al Qaeda with a new base from...