http://www.independent.co.uk/opinion/commentators/patrick-cockburn-gaddafi-cannot-hold-out-but-who-will-replace-him-2247753.html
In terms of the exercise of real authority, Gaddafi is likely to be replaced not by Libyans but by the foreign powers which assist in his overthrow. Going by what happened in Afghanistan and Iraq it will not take much for their actions to be seen across the Middle East as hypocritical and self-serving, and resisted as such.