Israel can only pursue true peace with a Palestinian partner willing and able to make the painful compromises that will be necessary to bring about a lasting solution. Such a partner has proven elusive, as successive Palestinian leaders have dragged their feet, secure in the knowledge that the Arab world wouldn't dare make peace with Israel without them. Tuesday's White House ceremony should serve as a wake-up call to Palestinians who have long been led to believe that Arab leaders will sacrifice their own national interests on the altar of Palestinian rejectionism. That is clearly no longer the case.