FILE - In this Nov. 3, 2011, file photo, President Barack Obama talks with Turkey's Prime Minister Recep Tayyip Erdogan during a family photo at the G20 Summit in Cannes, France. When

 

              FILE - In this Nov. 3, 2011, file photo, President Barack Obama talks with Turkey
FILE - In this Nov. 3, 2011, file photo, President Barack Obama talks with Turkey's Prime Minister Recep Tayyip Erdogan during a family photo at the G20 Summit in Cannes, France. When Obama meets over the next month with leaders from Mideast and other regional nations, he will have a timely opportunity to try to rally the Syrian opposition's main backers around a unified strategy to oust Syrian President Bashar Assad. Jordan, Turkey, Qatar and the United Arab Emirates _ whose Sunni Muslim leaders will meet separately with Obama starting April 16_ are all believed to be arming or training rebel forces seeking to overthrow Assad's regime. (AP Photo/Charles Dharapak, File)