As observers warn of stalemate between the rebel forces and dictator Muammar Gaddafi in Libya, expert Tarik Yousef says the United States has a responsibility to aid the cause of democracy in the region, and can speak with greater authority in North Africa than the former colonial powers of Europe. Yousef, a Libyan-born scholar, discusses the surprising spirit with which the rebels have launched their revolt after 42 years of iron rule.