Charles Krauthammer writes:

Palestinian Authority president Mahmoud Abbas unwaveringly insists on the so-called “right of return,” which would demographically destroy Israel by swamping it with millions of Arabs, thereby turning the world’s only Jewish state into the world’s 23rd Arab state.

He has repeatedly declared, as recently as last week in New York: “We shall not recognize a Jewish state.”

The Palestinians are quite prepared to sign interim agreements, like Oslo. Framework agreements, like Annapolis. Cease-fires, like the 1949 armistice. Anything but a final deal. Anything but a final peace. Anything but a treaty that ends the conflict once and for all —

anything that will leave a Jewish state standing.

"Behold, I am about to make Jerusalem a cup of staggering to all the surrounding peoples. The siege of Jerusalem will also be against Judah, [which is called the West Bank today]. Zechariah 12:2