Lets say that there is no truce. The Jews don't have time to reorganize or prepare for the next round. And then lets have a different leader in Jordan that commits the Arab Legion to do more.
End result Israel is destroyed, there is a Palestine, and the Arab nations pick up the pieces and get slightly bigger. So with no Israel how would this new middle east turn out in the cold war?
Im talking about the 1948 war btw.