Libyan leader Muammar Gadhafi said on Wednesday that U.S. Democratic presidential candidate Barack Obama's expressed support for Israel stems from his fear that the Mossad would assassinate him, just as it did President John F. Kennedy. "We suspect he may fear being killed by Israeli agents and meet the same fate as Kennedy when he promised to look into Israel's nuclear program," Gadhafi said. While the existence of Israeli nuclear weapons is widely assumed, Israeli officials have never admitted their existence and U.S. officials have stuck to that line in public.