** FILE ** In this photo provided by Turkish Prime Minister's Press Service, Turkish Prime Minister Recep Tayyip Erdogan, and his wife Emine Erdogan hold newly born babies during a visit to a Syrian refugee camp in Sanliurfa, Turkey, Sunday, Dec. 30, 2012. Erdogan repeated a call on Syrian President Bashar Assad to step down. (AP Photo/Kayhan Ozer)
** FILE ** In this photo provided by Turkish Prime Minister's Press Service, Turkish Prime Minister Recep Tayyip Erdogan, and his wife Emine Erdogan hold newly born babies during a visit to a Syrian refugee camp in Sanliurfa, Turkey, Sunday, Dec. 30, 2012. Erdogan repeated a call on Syrian President Bashar Assad to step down. (AP Photo/Kayhan Ozer)
A Free Syrian Army fighter steps on a paper with the photo of Syrian President Bashar Assad in Aleppo, Syria, Tuesday, Jan. 15, 2013. (AP Photo/Andoni Lubaki)
A Free Syrian Army fighter steps on a paper with the photo of Syrian President Bashar Assad in Aleppo, Syria, Tuesday, Jan. 15, 2013. (AP Photo/Andoni Lubaki)
** FILE ** In this Oct. 2, 2010, file photo, Iranian President Mahmoud Ahmadinejad, left, holds up the hand of his Syrian counterpart Bashar Assad after he awarded Iran's highest national medal to Assad, in a ceremony in Tehran, Iran. (AP Photo/Vahid Salemi, File)
** FILE ** In this Oct. 2, 2010, file photo, Iranian President Mahmoud Ahmadinejad, left, holds up the hand of his Syrian counterpart Bashar Assad after he awarded Iran's highest national medal to Assad, in a ceremony in Tehran, Iran. (AP Photo/Vahid Salemi, File)
Syrian President Bashar Assad outlines a new peace initiative that includes a national reconciliation conference and a new government and constitution but demands for regional and Western countries to stop funding and arming rebels first, on Sunday, Jan. 6, 2013, in Damascus, Syria. (AP Photo/Syrian State Television via AP video)
Syrian President Bashar Assad outlines a new peace initiative that includes a national reconciliation conference and a new government and constitution but demands for regional and Western countries to stop funding and arming rebels first, on Sunday, Jan. 6, 2013, in Damascus, Syria. (AP Photo/Syrian State Television via AP video)
Free Syrian Army members react to fighting in Aleppo, Syria, on Jan. 3, 2013. The area is immersed in a Syrian civil war that the United Nations estimates has killed more than 60,000 people since the revolt against President Bashar Assad began in March 2011. (Associated Press)
