Unfortunately, that message does not seem to have reached Prime Minister Ariel Sharon, who, I believe, has never had a plan for how to reach a stable accommodation with the Palestinians, is only interested in making the West Bank safe for Israeli settlers to stay, not to leave, and is going to lead Israel into a dead end — if he sticks to his present course — and will take America along for the ride.

I have enormous sympathy for Israel's plight today. There is no society in the world that has ever been exposed to what Israel has over the past two years — repeated suicide bombings of its civilians in their buses, restaurants and city centers, compounded by anti-Semitic attacks by Europeans, who call for a severing of ties with Israeli universities when Israel retaliates. That is enough to make any civilized society crazy.

But the Sharon response is not working. Months ago Mr. Sharon dismissed Yasir Arafat as "irrelevant," smashed his security services and announced Israel's intention to assume responsibility for its own security in the West Bank. But when Palestinian suicide bombers from Hamas and Islamic Jihad then perpetrate more suicide bombings, Mr. Sharon attacks Mr. Arafat's headquarters as if he sent the bombers himself.

If Mr. Sharon believes that Mr. Arafat sent these bombers, then he should evict him. If he thinks Mr. Arafat is irrelevant, then he should ignore him. But what makes no sense is to treat Mr. Arafat as if he's totally irrelevant and totally responsible. Because all that does is get Palestinians to rally around the feckless Mr. Arafat and abort any possibility of Palestinians producing a new leadership that would be relevant to negotiations and to Israeli security.

That's not a pipe dream. Thanks to President Bush's blunt call for Palestinians to dump Mr. Arafat — and thanks to Mr. Sharon's crackdown on Palestinians to prove that the foolish intifada they launched two years ago (in the wake of President Clinton's peace overture) will not pay — Israel and the U.S. had begun to sow the first seeds of internal Palestinian reform that were needed for them to rein in the suicide bombers.

For the past months a few Palestinian leaders and commentators have been speaking about what a mistake it was for Mr. Arafat to have turned down the Clinton plan for a Palestinian state; Palestinian legislators have voted no confidence in Mr. Arafat's cabinet and pushed forward more responsible alternatives; and secular Palestinians have begun openly questioning suicide bombing. All of these trends are bad news for Hamas, Islamic Jihad, Iraq and Iran. So they have been pushing out even more suicide bombers to trigger a Sharon reaction that would rally Palestinians around Mr. Arafat's failed leadership and abort the emergence of any new consensus. Mr. Arafat is celebrating.

Mr. Sharon has a tough job. He has to pursue a peace settlement with the Palestinians, as if there were no terrorism, and to hunt the terrorists, as if no peace settlement were possible. That requires subtle distinctions. But Mr. Sharon's policy seems to be to ignore all distinctions — between Hamas and Arafat and between Hamas and the secular Palestinian mainstream, who would like to see change.

One has to wonder whether Mr. Sharon really isn't out to undermine the whole Palestinian national movement in hopes that one day some quisling Palestinian Authority simply surrenders to the Israeli occupation. He sure doesn't seem interested in nurturing a more responsible Palestinian Authority to cede land to.

If that is where Mr. Sharon is going, it will come to tears, and the Bush team, if it goes along for the ride, will be very sorry. Always remember, the leading Hebrew biography of Mr. Sharon is entitled "He Doesn't Stop at Red Lights."