From Freedom Fighters to Jihadists

At the start of the Syrian conflict in 2011, thousands of pro-democracy rebel groups spontaneously formed to fight the Assad regime. Years later, the revolution was unrecognizable as rebel opposition forces had merged into three major groups: Jabhat al-Nusra, Ahrar al Sham, and the Islamic State in Iraq and Syria (ISIS). Why did these three groups rapidly increase in size and military strength wh...