That isn't at all clear. The regime is about as popular as a dog turd. How does the regime stay in power, if not by crushing it's enemies and striking terror into the hearts of everyone?
It worked for Saddam for 30 years. Worked for Stalin until he died in bed.
To believe the opposition activists, and the media who's infatuated with them and calls them the "people of Syria." Sure, they're some of them, but how many really?
I don't know how widely-supported turds are in Syria, so I can't assess your camparison.
Just a few examples of how many were willing to flip-off the West and show their support:
http://www.youtube.com/watch?v=SRrqef0zYaI
http://www.aztagenglish.com/a-pro-assad-rally-in-aleppo/
http://realisticbird.wordpress.com/2011/10/19/syrians-rally-in-support-of-assad/
http://www.dailystar.com.lb/News/Mi...-in-syrian-protests-huge-pro-assad-rally.ashx
All of these people, possible targets of retaliation after a rebel victory. The opposition said they represent all Syrians. These many many Syrians embarrassed them in front of their foreign benefactors by refuting it.
As far as how you "maintain" control of the rebel-held area per the cease-fire terms (by the way, rebel security failed there). As I've explained, and will once more but better, they certainly would
not have done well to do what happened in Taldou and that other village. If they had, the investigations would have no choice but to uncover the reliable evidence proving it, and even the Russians would be hard-pressed to support that. Kofi Annan might have known it in his gut enough to call off the peace plan right there, instead of saying half-things to stall for clarity like others have done.
As it is, investigators will have to be really selective to blame Assad, and I don't know what this UN team is all about, so we'll see.
The Russians wouldn't likely be changing their tune from "both to blame" to "support for the opposition to blame" unless they had reason to believe the world at large will be forced to acknowledge this as a rebel massacre. Or at least (more likely) as too murky to call, left hanging, used vaguely to support deadly and prolonged half-measures of attrition, etc.
But this remaining pinned clearly on Assad and his people, unlikely. It was too far a reach, I'm happy to report that I now suspect. There will also be some delightfully awkward moments.
If it had been the regime, the evidence would be there, and they would be all-but proven to have been that monumentally stupid/insane plus evil. Their own people really would rebel en masse, UNSC approval for bombing, done on the cheap, over in a year. But just watch - that won't be happening.