Annihilation was not an option in '67, as even prominent IDF aggressors fully admitted:
"Major General Mattityahu Peled, the Chief of Logistics for the Armed Forces during the war, said the survival argument was 'a bluff which was born and developed only after the war ... When we spoke of the war in the General Staff, we talked of the political ramifications if we didn't go to war what would happen to Israel in the next 25 years. Never of survival today.'[162]
"Peled also stated that 'To pretend that the Egyptian forces massed on our frontiers were in a position to threaten the existence of Israel constitutes
an insult not only to the intelligence of anyone capable of analyzing this sort of situation, but above all an insult to Zahal (Israeli military).'"
Origins of the Six-Day War - Wikipedia, the free encyclopedia
Hindsight is 20/20. According to the Arabs annihilation was not only the goal, but imminent:
In the weeks leading up to the Six Day War:
President Abdul Rahman Arif of Iraq said that "the existence of Israel is an error which must be rectified. This is an opportunity to wipe out the ignominy which has been with us since 1948".[92]
The Iraqi Prime Minister predicted that "there will be practically no Jewish survivors".
In May 1967, Hafez al-Assad, then Syria's Defense Minister declared: "Our forces are now entirely ready not only to repulse the aggression, but to initiate the act of liberation itself, and to explode the Zionist presence in the Arab homeland. The Syrian Army, with its finger on the trigger, is united...
I, as a military man, believe that the time has come to enter into a battle of annihilation."[93]