Come on, this is horribly biased. International recognition means BS, especially if half the states around the world officiall denounced him. Also, CIA staged revolution
The two are fundamentally different in their motivation, ISIS being religious fundamentalists, Assad primarily being in it for his own gain/drive to power as it seems to me. Their methods & the harm they're causing right now are surprisingly similar.
You know that things don't work like that

Countless regimes have survived for decades in human history despite the majority actually being against them. The only thing you could argue for is that the majority didn't want him gone badly enough to risk their lives over it.