A Canadian conservative is one who believes in limited government and that the government should stay out of our wallets and out of our bedrooms.
The rebels are islamist supremacists, jihadists.
But Assad is a dictator and a tyrant. So there is no reason to support him or the jihadi rebels.
The only course of action that NATO or the US alone or anyone can take is to go in, wipe the floor with both faction and then restore democracy. Anything else is foolish.