The United States did not spend eight years negotiating with Mullah Omar and the Taliban. President Bush gave them one chance to cooperate and hand over Osama bin Laden; when they refused, they were destroyed. Arafat and his lieutenants, by contrast, have been given chance after chance to prove their peaceful bona fides. What they have proven instead is that they are liars and conscienceless killers. If America after Sept. 11 had the right to obliterate the Taliban, Israel has the right to obliterate the Palestinian Authority.