Moammar Gadhafi is one of the world's most despicable despots. For 42 years he has held his subjects in a prison of fear that makes Hosni Mubarak's Egypt look free by comparison. He has trained and supported killers like Charles Taylor and Foday Sankoh, fueling horrific wars in Liberia, Sierra Leone and other African countries that have killed hundreds of thousands of Africans—an estimated 200,000 in Liberia alone, 5% of the population. And it is he—not his agent Abdel Baset al-Megrahi, who was welcomed back to Libya as a hero last year—who bears ultimate responsibility for the bombing of Pan...