What would be the tripping point in this war where Israel would decide to use their nukes? Surely, just having a few rockets hit Haifa wouldn't be sufficient, would it?
Golda was a great one. She was from the great tradition of "take no prisoners" Israeli leadership. David Ben-Gurion and Moshe Dayan come to mind. So was Menachem Begin.
Israel was losing that war, and she was not going to lose. Israel would have nuked Cairo and Damascus if need be.
President Nixon, hounded by the dogs in the press and the full might of the left, made a great decision. He would defend Israel at the risk of nuclear war. No one gave him any credit for it, and the press did all they could to discredit him.
Around 1975, people started writing novels about the very scenario that had just taken place, as if it were fiction.