The Sykes-Picot agreement, reached a century ago this week, delineated national borders based more on British and French interests than local conditions. But it has proven surprisingly resilient.
Under Sheikh Nasrallah, Hezbollah rode to the defense of its ally Syria. But the Shiite group that was founded to confront Israel is paying a high price in lives and prestige.
Fadel Shaker's about-face stands as a symbol of a wider crisis facing jihadist groups in Syria. Dozens of Saudis and more than 100 Jordanians have reportedly defected as well.