CAIRO - An Israeli attempt to assassinate Yasser Arafat is "only a matter of time", the Palestinian leader's national security adviser Jibril Rajoub said in an interview published here yesterday. "An attack on Arafat's life is only a matter of time because Arafat symbolises the freedom" of the Palestinian people, General Rajoub told the Egyptian weekly magazine Nahdat Mir. On March 22, the leader of the Palestinian radical Islamic movement Hamas, Sheikh Ahmed Yassin, was killed in an Israeli helicopter raid in Gaza City. And Israel assassinated his successor, Abdelaziz Rantissi, less than a month later. Israeli Prime Minister...