And, also from the pages of Foreign Policy,
Qaddafi has preferred mercenaries and street thugs rather than regular soldiers for his security. He has avoided keeping a competent army, an institution that would have been a threat to his rule. With few external threats and all of the biggest risks to his power coming from inside the country, Qaddafi rationally preferred outsiders for security -- as we have witnessed, they have less compunction pulling the triggers when necessary. The recent events in Egypt supported Qaddafi's security strategy -- Egypt's well-established and nationally respected army removed Hosni Mubarak from office relatively quickly.