Rebels in Libya continue to struggle with each other over who will control the country, and with Moammar Gadhafi’s loyalists, who rejected their offer for the missing leader to surrender. Meanwhile, nearly two weeks over rebels took over Tripoli, Gadhafi remains separated from his wife and two children, who fled to Algeria earlier this week. What will it take for Gadhafi to step down? Riccardo Orizio, Italian journalist and author of the book “Talk of the Devil: Encounters with Seven Dictators,” looks at the conditions that have made other dictators relinquish their power.