@Tiredtaxpayer
Gamal Abdel Nasser publicly talked about destroying Israel in the run up to the Six Day war. In May 1967 was quoted as saying our : “Our basic objective is to destroy Israel.” And that wasn't defensive rhetoric.
If you read the full context how he is saying IF Israel attacks, then the objective will be to destroy Israel. There was no intention to attack.
“If Israel embarks on, an aggression against Syria or Egypt, the battle against Israel will be a general one and not confined to one spot on the Syrian or Egyptian borders. The battle will be a general one and our basic objective will be to destroy Israel.” https://jewishvirtuallibrary.org/statement-by-president-nasser-to-arab-trade-unionists-may-1967.
Nasser moved Egyptian forces into Sinai, expelled the UN peacekeepers and closed the Straits of Tiran
In fact, Israel’s own intelligence had assessed, following the Egyptian movement of troops, that Nasser had no intention of attacking Israel (they judged him not to be insane), which was an assessment shared by the US intelligence community.
The CIA observed that Egypt’s forces had taken up defensive positions after having received an intelligence report from the Soviet Union that Israel was amassing forces on the border with Egypt’s ally, Syria. (“The Soviet advice to the Syrians [sic] that the Israelis were planning an attack was not far off,” State Department Middle East analyst Harold Saunders subsequently assessed, “although they seem to have exaggerated the magnitude. The Israelis probably were planning an attack—but not an invasion.”)
The CIA also accurately predicted and warned President Lyndon Johnson that the war was coming, and that it would be Israel who would start it. The documentary record of diplomatic cables during this time (i.e., the State Department’s Foreign Relations of the United States collection) is replete with warnings to Israel that it would not be politically feasible for the US to intervene on Israel’s side—as Israel was pushing the Johnson administration to do—if it was the party responsible for firing the first shot of the war.
“As your friend,” President Johnson wrote in a letter delivered to Israeli Prime Minister Levi Eshkol on May 28, for example, “I repeat even more strongly what I said yesterday to Mr. [Abba] Eban [Israel’s ambassador to the US]. Israel just must not take any preemptive military action and thereby make itself responsible for the initiation of hostilities.” (Emphasis added.)