Omar Karsou, a Palestinian from Ramallah who lives in New York, has found favor with U.S. government leaders. He is convinced that the Oslo Accords were a mistake, that Israel encouraged a corrupt and murderous regime headed by a dictator, and that compromise is unavoidable. LONDON - A bearded, balding man, who looked to be of Middle Eastern origin, approached the side table around which U.S. Vice President Richard Cheney and his senior advisers were dining 10 days ago. The Secret Service men allowed him through after a brief ID check. Cheney and his colleagues, including Deputy Secretary of Defense...