Large protests are not a guarantee of a revolutionary will. Libyans were in conventional armed conflict before the UN and NATO decided to intervene. It would be foolish to think that any outside power would not be looking for similar conditions before deciding to take open military action against Syria.
Firebombs and stones thrown in Jerusalem's Old City; officer lightly wounded (Haaretz)
from the article: At least 88 protesters killed in deadliest day of Syria unrest