From Vox, a quick video summary of the war in Syria and the rise of ISIS.
The Islamic State of Iraq and Syria, which has claimed responsibility for Friday’s terror attacks in Paris, has its origins in Iraq, but the group as we know it today is in many ways a product of Syria’s civil war. That war is much bigger than ISIS, but it is crucial for understanding so much that has happened in the past year, from terror attacks to the refugee crisis. And to understand the war, you need to understand how it began and how it unfolded.
See also Syria’s civil war: a brief history.