Libya... no
Baharain... possibly
Yemen... maybe.
The problem with Libya is that it JUST recently entered the international community, actually due to the strongarm tactics of the Bush administration along with others factors. There is no way for the international community to intervene... they are fully willing to use full force and to go back in on themselves. They'll end up like the protestors in Iran.
Baharain they SHOULD be able to pull it off, and the Prince has been authorized to start talks. If Obama gets off his ass and starts pressuring them, they should be able to pull it off as they have been tied up with western interests for a while now. I can only imagine that's why the troops have been ordered off the streets, more behind the scenes work from Obama like in Egypt.
Yemen... despite having little Western ties... was fragile before this started... and there are already some violent opposition groups... but even if they succeed... it probably would only lead to another dictator.
