THE last three decades are littered with the carcasses of failed negotiating projects billed as the last chance for peace in Israel. All sides have been wedded to the notion that there must be two states, one Palestinian and one Israeli. For more than 30 years, experts and politicians have warned of a “point of no return.” Secretary of State John Kerry is merely the latest in a long line of well-meaning American diplomats wedded to an idea whose time is now past.