Qatari foreign minister Sheik Hamad bin Jassim al-Thani talks during an Arab League committee emergency meeting on Syria at the league’s headquarters in Cairo, Egypt, Thursday, May 23, 2013, ahead of an international peace conference to end the country’s civil war. (AP Photo/Amr Nabil)
Qatari foreign minister Sheik Hamad bin Jassim al-Thani talks during an Arab League committee emergency meeting on Syria at the league’s headquarters in Cairo, Egypt, Thursday, May 23, 2013, ahead of an international peace conference to end the country’s civil war. (AP Photo/Amr Nabil)
A Sunni gunman fires his machine gun during clashes that erupted between pro- and anti-Syrian regime gunmen, in the northern port city of Tripoli, Lebanon, Thursday, May. 23, 2013. Opponents and supporters of Syrian President Bashar Assad traded heavy machine gun fire and mortar shells in the Lebanese port city of Tripoli, leaving five people dead in what was described as some of the heaviest fighting there in years, officials said Thursday. (AP Photo)
A Sunni gunman fires his machine gun during clashes that erupted between pro- and anti-Syrian regime gunmen, in the northern port city of Tripoli, Lebanon, Thursday, May. 23, 2013. Opponents and supporters of Syrian President Bashar Assad traded heavy machine gun fire and mortar shells in the Lebanese port city of Tripoli, leaving five people dead in what was described as some of the heaviest fighting there in years, officials said Thursday. (AP Photo)
An Israeli soldier drives an armored personal carrier during a military exercise in the Israeli controlled Golan Heights, near the border with Syria, Tuesday, May 7, 2013. (AP Photo/Ariel Schalit)
Israeli tanks in the Israeli-controlled Golan Heights overlook the Syrian village of Bariqa on Nov. 12, 2012. The Israeli military says "Syrian mobile artillery" was hit after responding to stray mortar fire from its northern neighbor. The incident marked the second straight day that Israel has responded to fire from Syria that does not appear to be aimed at Israeli targets, nonetheless Israel has promised a tough response if the fire continues. (Associated Press)
** FILE ** This Wednesday, Aug. 19, 2009, file photo shows Syrian President Bashar Assad, seen, during a meeting with his Iranian counterpart Mahmoud Ahmadinejad, unseen, at the presidency in Tehran, Iran. (AP Photo/Vahid Salemi, File)
** FILE ** This Wednesday, Aug. 19, 2009, file photo shows Syrian President Bashar Assad, seen, during a meeting with his Iranian counterpart Mahmoud Ahmadinejad, unseen, at the presidency in Tehran, Iran. (AP Photo/Vahid Salemi, File)
This image taken from video obtained from Ugarit News, which has been authenticated based on its contents and other AP reporting, shows a rocket fired by Syrian rebels at Mannagh air base in the Aleppo province of Syria on May 13, 2013. (Associated Press/Ugarit News via AP video)
