This citizen journalism image provided by the Syrian Revolution Against Bashar Assad, which has been authenticated based on its contents and other AP reporting, shows Syrian rebels, right, standing next a damaged warplane, at Abu Dhour military airbase, which is besieged by the rebels in the northern province of Idlib, Syria, Tuesday, April 30, 2013. (AP Photo/The Syrian Revolution Against Bashar Assad)
** FILE ** In this image from video broadcast on Syrian state television Wednesday, April 17, 2013, President Bashar Assad speaks during an interview. (AP Photo/Syrian State TV via AP video
** FILE ** In this Monday, Sept. 17, 2012, file photo, Hezbollah leader Sheik Hassan Nasrallah, center, waves to his supporters, in the southern suburb of Beirut, Lebanon. The leader of Lebanon’s Hezbollah says Syrian rebels will not be able to defeat President Bashar Assad’s regime, while strongly suggesting his Iranian-backed militant group could intervene on the government’s side if the need arises. (AP Photo/Hussein Malla, File)
** FILE ** In this Monday, Sept. 17, 2012, file photo, Hezbollah leader Sheik Hassan Nasrallah, center, waves to his supporters, in the southern suburb of Beirut, Lebanon. The leader of Lebanon’s Hezbollah says Syrian rebels will not be able to defeat President Bashar Assad’s regime, while strongly suggesting his Iranian-backed militant group could intervene on the government’s side if the need arises. (AP Photo/Hussein Malla, File)
** FILE ** In this image from video broadcast on Syrian state television Wednesday, April 17, 2013, President Bashar Assad speaks during an interview. (AP Photo/Syrian State TV via AP video
In this image from video broadcast on Syrian state television Wednesday, April 17, 2013, President Bashar Assad speaks during an interview. Syria's president accused the West on Wednesday of backing al Qaeda in his country's civil war, warning it will pay a price "in the heart" of Europe and the United States as the terror network becomes emboldened. (AP Photo/Syrian State TV via AP video
** FILE ** In this image from video broadcast on Syrian state television Wednesday, April 17, 2013, President Bashar Assad speaks during an interview. (AP Photo/Syrian State TV via AP video
British Foreign Secretary William Hague (right) greets US Secretary of State John Kerry ahead of a meeting in the Foreign and Commonwealth Office in central London, Wednesday April 10, 2013. Kerry is meeting in London with Syrian opposition leaders and Russia's top diplomat, a day after saying the U.S. could soon step up aid to rebels fighting Syrian President Bashar Assad's regime. Kerry is in London for a G8 foreign ministers' meeting today and Thursday. (AP Photo/Ben Stansall, pool)
British Foreign Secretary William Hague (right) greets US Secretary of State John Kerry ahead of a meeting in the Foreign and Commonwealth Office in central London, Wednesday April 10, 2013. Kerry is meeting in London with Syrian opposition leaders and Russia's top diplomat, a day after saying the U.S. could soon step up aid to rebels fighting Syrian President Bashar Assad's regime. Kerry is in London for a G8 foreign ministers' meeting today and Thursday. (AP Photo/Ben Stansall, pool)
