Let the people of Syria decide their own fate. Not NATO. Not America. Not the EU. And most importantly tell Saudi Arabia, Qatar and Turkey to stop meddling in the affairs of Syria and trying to replace Assad with the Muslim Brotherhood.
What started the civil was a peaceful protest in the streets by average Syrian citizens wanting more freedom. Assad sent in his military and they started shooting the protesters. Basically, the same thing his father had brutally done 40+ years before. So a grass roots resistance of Syrian citizens took up arms to gain their freedom. They wanted a democratic Syria and the right to vote in their leader. But Obama and Europe created an arms embargo, which crippled the freedom seeking Syrian people. That is when the foreign fighters rushed in to fill the gap, and the rest is history.
btw Syria is around 85% sunni muslims, while the ruler Assad and his murderous gang are Alawites who comprise less the 10% of the population. ......