I want reasons for your claim. Personally, I doubt he's any worse than any other 'leader' out there. If graduating to the level of President/Prime Minister automatically makes one evil, then fine, all heads of state are evil, but at least say that.
But I don't know of Assad droning the heck out of other countries. I don't know that Assad premeditatively targeted and murdered Syrian citizens. I don't know that Assad deliberately creates friction between the different people living in Syria.
As far as I know he's done none of those things so his perhaps incompetance in improving the economy in Syria is not unlike every other country.
I'm with Dan. I do not believe Assad used weapons against his people as there's much more evidence pointing toward the insurgents.
If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy.