No member of the United Nations likes to have a Security Council resolution written up on it, because they see this as impinging on their sovereignty. If you look in past conflicts, Sri Lanka, for example, they always tried to avoid a Security Council resolution at all means because it starts to erode their claim that they have absolute sovereign right over their territory and they broke no interference, etc.
If you look at why Russia and China, for example, have consistently vetoed resolutions in the past...less about Syria than their own sovereignty and what might happen to them in the future. I think there's leverage when there's a Security Council resolution because it opens the door to impinging on the sovereign rights that they like to protect.
If I can give a personal opinion, too, and it requires more analysis than perhaps I'm capable of, but I think if you look at both Russia and Iran, they are not absolutely wedded to Assad or the regime per se. They are wedded to having influence in Syria for religious or regional power reasons. So I could see, perhaps, and some analysts have said that if the Assad top layer becomes too embarrassing for Russia or Iran, for example, they may be willing to see them go.
Certainly, I don't think in Syria we should expect to see the entire governing structure disappear. I think that would be a disaster, because there is nothing else. But I think the top layer of these people who are clinging on to power by any means, one could see that eventually they may be too much of an embarrassment to Russia or to Iran.
What influence does Russia have? Russia, when we had the Security Council presidential statement, actually performed a very useful role in trying to get the Syrian regime to collaborate. There was some progress we saw in easing some of the bureaucratic restrictions we faced. For example, one of my roles is to facilitate cross-border activities into Syria. I say “facilitate” because right now UN agencies have not been active across the border because of this sovereignty issue.
Syrians have warned the UN that we should not be too active. But I think there is.... Sorry, I've lost my thread here.