This about sums up one side:
"During its decades of rule... the Assad family developed a strong political safety net by firmly integrating the military into the government. In 1970, Hafez al-Assad, Bashar’s father, seized power after rising through the ranks of the Syrian armed forces, during which time he established a network of loyal Alawites by installing them in key posts. In fact, the military, ruling elite, and ruthless secret police are so intertwined that it is now impossible to separate the Assad government from the security establishment.... So... the government and its loyal forces have been able to deter all but the most resolute and fearless oppositional activists. In this respect, the situation in Syria is to a certain degree comparable to Saddam Hussein’s strong Sunni minority rule in Iraq."


[link to en.wikipedia.org]