I'm not saying you do (it sorta looks like you don't), and I'm not even saying you should (you're not wrong to worry that military intervention might not end well).

But let's say you become convinced that military intervention is the only way to protect Syrian civilians from being slaughtered by government forces, or that it's the only way to prevent Iran and Hezbollah from becoming dangerously emboldened, or the only way to prevent factions with links to al Qaeda from gaining the upper hand within the Syrian rebel movement, or the only way to prevent the conflict from spilling over into neighboring countries, or the only way to do all those things. And let's say that Russia continues to block every U.N. Security Council resolution that might pave the way for a civilian-protection intervention á la Libya.