That might have been a reasonable prescription at the start of the affair, but it's way beyond that point now, and the last thing the US should be doing is proposing a solution that would leave Assad in power... or for that matter proposing any solution at all, since there's no point in making proposals you aren't willing to stand behind.
A good thing or a bad thing for who? For us it needn't be good or bad, as it's really not our business... neither is it our business to be telling others what we think is good or bad for them.
Bookmarks