ISRAEL did not wait long to reveal its first response to the United Nations General Assembly’s overwhelming recognition of Palestine as a non-member state, almost immediately announcing its intention to push forward with plans to build housing for Jewish settlers in E1, an area of the West Bank just to the east of Jerusalem.

Although it is sometimes misleadingly referred to as “disputed” or “controversial,” settlement construction in E1 is no more and no less of a contravention of international law than settlement construction elsewhere in the West Bank or East Jerusalem. What makes this development significant is E1’s location, sealing tight the gap between East Jerusalem and Israel’s largest settlement, Maale Adumim, further to the east.

That gap is the last remaining link for Palestinians between the northern and southern parts of the West Bank; it also occupies the interface among and between the Palestinian communities of Ramallah, Bethlehem and East Jerusalem — which, apart from being the cultural, religious, social and economic focal point of Palestinian life, is also one day supposed to be the capital of Palestine.

In moving forward with long-threatened plans to develop E1, Israel will be breaking the back of the West Bank and isolating the capital of the prospective Palestinian state from its hinterland. In so doing, it will be terminating once and for all the very prospect of that state — and with it, by definition, any lingering possibility of a two-state solution to the Israeli-Palestinian conflict.