The Bush administration seems less and less likely to launch a parting strike on Iran's nuclear installations - but Israel isn't sounding nearly so tranquil. The talk from Jerusalem will almost certainly grow more strident as the competition to replace the country's scandal-plagued prime minister, Ehud Olmert, intensifies. Former Israeli defense minister Shaul Mofaz is running hard against the less hawkish Foreign Minister Tzipi Livni to succeed Olmert as leader of the governing Kadima Party; he recently told Israel's dominant daily newspaper, Yediot Ahronot, that an attack on Iran was "unavoidable." And Binyamin Netanyahu, the right-wing opposition leader who might well beat either Livni or Mofaz in a general election, is also likely to think seriously about a preventive Israeli raid. Meanwhile, prominent Israeli military analysts, officials and writers are insisting that Iran constitutes a mounting "existential threat."