If Israel would start decisively winning conflicts like it did a few decades ago, we might find that Israel's ability to broker terms in its favor would increase in a manner proportional to such power. Mr. Begin's tenure probably marked the zenith of Israel's military power in the post-WWII era. In the 1980's Iran and Iraq were incapable of defeating each other, Saudi was terrified of Israeli reach, Hezbollah was on the run from Israel, the PLO wasn't safe in Tunis, Jordan hid behind de facto Israeli security assurances and the Americans couldn't function in the region without crashing helicopters, getting CIA station chiefs killed, and hundreds of Marines blown up at a time.
My, how times have changed.