Sabra, acting President of the Syrian National Coalition, speaks during the opening session of a meeting by members of the Syrian opposition in Istanbul

George Sabra (L), a veteran Christian opposition figure and acting President of the Syrian National Coalition, speaks during the opening session of a meeting by members of the Syrian opposition in Istanbul May 23, 2013

George Sabra (L), a veteran Christian opposition figure and acting President of the Syrian National Coalition, speaks during the opening session of a meeting by members of the Syrian opposition in Istanbul May 23, 2013

George Sabra (L), a veteran Christian opposition figure and acting President of the Syrian National Coalition, speaks during the opening session of a meeting by members of the Syrian opposition in Istanbul May 23, 2013. REUTERS/Bulent Kilic/Pool

Syria opposition meets to find leader, show it is ready for arms