Syrian refugees chant slogans to protest against the visit of Lakhdar Brahimi, the U.N.-Arab League envoy to Syria, not pictured, to the Zaatari Refugees Camp in Jordan for Syrians who fled the civil war in their country in Mafraq, Jordan, Tuesday, Sept. 18, 2012. (AP Photo/Raad Adayleh)

Photo by: Raad Adayleh

Syrian refugees chant slogans to protest against the visit of Lakhdar Brahimi, the U.N.-Arab League envoy to Syria, not pictured, to the Zaatari Refugees Camp in Jordan for Syrians who fled the civil war in their country in Mafraq, Jordan, Tuesday, Sept. 18, 2012. (AP Photo/Raad Adayleh)