In his speech to Arab trade unionists on May 26, Nasser announced: "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."

Speaking to the UN General Assembly in September 1960, Nasser had stated that "The only solution to Palestine is that matters should return to the condition prevailing before the error was committed - i.e., the annulment of Israel's existence." In 1964 he said, "We swear to God that we shall not rest until we restore the Arab nation to Palestine and Palestine to the Arab nation. There is no room for imperialism and there is no room for Britain in our country, just as there is no room for Israel within the Arab nation." In 1965 he asserted, "We shall not enter Palestine with its soil covered in sand, we shall enter it with its soil saturated in blood."

Nasser publicly denied that Egypt would strike first and spoke of a negotiated peace if the Palestinians were allowed to return to their homeland and of a possible compromise over the Strait of Tiran.

Israeli Foreign Minister Abba Eban wrote in his autobiography that he found "Nasser's assurance that he did not plan an armed attack" convincing, adding that "Nasser did not want war; he wanted victory without war".[102][103] Writing from Egypt on June 4, 1967, New York Times journalist James Reston observed: "Cairo does not want war and it is certainly not ready for war. But it has already accepted the possibility, even the likelihood, of war, as if it had lost control of the situation."

Writing in 2002, American National Public Radio journalist Mike Shuster expressed a view that was prevalent in Israel before the war that the country "was surrounded by Arab states dedicated to its eradication. Egypt was ruled by Gamal Abdel Nasser, a firebrand nationalist whose army was the strongest in the Arab Middle East. Syria was governed by the radical Baathist Party, constantly issuing threats to push Israel into the sea." With what Israel saw as provocative acts by Nasser, including the blockade of the Straits and the mobilization of forces in the Sinai, creating military and economic pressure, and the United States temporizing because of its entanglement in the Vietnam War, Israel's political and military elite came to feel that preemption was not merely militarily preferable, but transformative.