It wouldn't happen in the demoratic countries you mentioned - it began because the people of Syria want a change of leadership and government - they don't want Assad. In democratic countries people change their eleaders all the time. Do you even understand the difference?
Knesset passes 'Norwegian Law' allowing ministers to resign their seats, remain in cabinet (Haaretz)
from the article: Report: Assad's army kills 60 in intense shelling of Syria's Homs