What happened in 2014 that made the ongoing civil war in syria even more complicated

One significant event that made the ongoing civil war in Syria even more complicated in 2014 was the emergence of the Islamic State of Iraq and Syria (ISIS) as a major player in the conflict. ISIS, a jihadist militant group, gained significant territory in Syria and Iraq, seizing control of key cities and resources. The group's brutal tactics and extremist ideology added another layer of complexity to an already chaotic situation in Syria. Additionally, the involvement of foreign powers, including the United States and Russia, in the conflict further intensified the complexity of the war.