The real tension is this:
Arafat and other PLO big shots want a West Bank and Gaza that are free enough from Isreal to arm themselves for the next stage of the war on the Jews of Isreal. Sharon and Isreal will support a Pallie State that cannot arm itself and war against Isreal..
You have to remember that Arafat runs a 3rd world country and all 3rd world dictators want weapons and plenty of them.
Yes, the ideal wall would be an oblong shape, with no beginning, and no end, if you get my drift. Barak's plan however makes a lot of sense. He's my man.