"Oh, but you broke the rules. Returning unilaterally to UN borders would be the death of many Israelis. "

Bullshit. There are many ways to protect Israel in its lawful borders--the problem is they clash with Likud's dream of taking all of Palestine. For example, from https://ifamericansknew.org/history/origin.html:

But wasn’t the occupation of Arab lands necessary to protect Israel’s security?

“Senator [J.William Fulbright] proposed in 1970 that America should guarantee Israel’s security in a formal treaty, protecting her with armed forces if necessary. In return, Israel would retire to the borders of 1967. The UN Security Council would guarantee this arrangement, and thereby bring the Soviet Union — then a supplier of arms and political aid to the Arabs — into compliance. As Israeli troops were withdrawn from the Golan Heights, the Gaza Strip and the West Bank they would be replaced by a UN peacekeeping force. Israel would agree to accept a certain number of Palestinians and the rest would be settled in a Palestinian state outside Israel.

“The plan drew favorable editorial support in the United States. The proposal, however, was flatly rejected by Israel. ‘The whole affair disgusted Fulbright,’ writes [his biographer Randall] Woods. ‘The Israelis were not even willing to act in their own self-interest.’” Allan Brownfield in “Issues of the American Council for Judaism.” Fall 1997.[Ed.—This was one of many such proposals]