"The legacy of the hostage crisis, the decades of isolation and the messianic aspect of the Iranian regime represent huge obstacles to such a diplomacy. If Tehran insists on combining the Persian imperial tradition with contemporary Islamic fervor, then a collision with America -- and, indeed, with its negotiating partners of the Six -- is unavoidable. Iran simply cannot be permitted to fulfill a dream of imperial rule in a region of such importance to the rest of the world. [ Back to the depressing... -ed. ] "