Syrian refugees hold a rally to call on assistance from international society in front of the U.N. office in Tripoli, northern Lebanon, on Jan. 24, 2013. Since March 2011, the crisis in Syria has left tens of thousands people killed and millions in need of assistance. In addition, large numbers of Syrians have fled their homeland for refuge in neighboring countries. (Xinhua/Omar)

Syrian refugees hold a rally to call on assistance from international society in front of the U.N. office in Tripoli, northern Lebanon, on Jan. 24, 2013. Since March 2011, the crisis in Syria has left tens of thousands people killed and millions in need of assistance. In addition, large numbers of Syrians have fled their homeland for refuge in neighboring countries. (Xinhua/Omar)

Syrian refugees hold a rally to call on assistance from international society in front of the U.N. office in Tripoli, northern Lebanon, on Jan. 24, 2013. Since March 2011, the crisis in Syria has left tens of thousands people killed and millions in need of assistance. In addition, large numbers of Syrians have fled their homeland for refuge in neighboring countries. (Xinhua/Omar)