One way or another, this conflict will end. Assad will fall - or he will remain in power thanks to a bloodbath, followed by another era of sullen repression. Either way, one of the best things the West can do now is help Syrian rebels and the Syrian diaspora think about what might come next. It seems ridiculous to focus on the future in the middle of a crisis. But in this case, that might be the only way the crisis can be resolved.