In 5, 10, 20 years time, the whole middle east will be awash with weapons of mass destruction (Israel is already awash with weapons of mass destruction). It is just a matter of time before both sides are so armed. I can just imagine the headlines from the next Arab-Israeli war:

ISRAEL WINS HUGE VICTORY.
90 MILLION DEAD ARABS.
ONLY 6 MILLION DEAD ISRAELIS.
Do you really think it is wise to let the Palestinian crisis fester for another 5, 10, 20 years. Fix the problems NOW.