Comments by freed nuclear spy Mordechai Vanunu that Israel was behind the assassination of US President John F. Kennedy failed to bring smiles to government officials Sunday. One would expect that such claims would portray Vanunu as a man with a credibility problem, but as far as the defense establishment is concern, the former nuclear technician still has secrets to reveal and a declared goal of ending Israel's nuclear program. He shouldn't be talking to the media and is actually barred from meeting with foreigners. Nevertheless, the London-base al-Hayat published Sunday an interview is claims it had with Vanunu. According...