Back to the 1967 Arab-Israeli 6 Day War.
A timeline immediately preceding the war
April 1967 Israel's army and air force attacked Syria, in response to Syrian shooting towards an Israeli tractor ploughing in the DMZ
May 1967
Nasser received false reports from the Soviet Union that Israel was massing on the Syrian border.
May 15, 1967
Egypt moves troops en mass into the Sinai.
May 16
Nasser began massing his troops in the Sinai Peninsula on Israel's border.
In a meeting with Nasser, Johnson’s special envoy to the UAR, Robert B. Anderson, expressed U.S. puzzlement over why he had massed troops in the Sinai, to which Nasser replied, “Whether you believe it or not, we were in fear of an attack from Israel. We had been informed that the Israelis were massing troops on the Syrian border with the idea of first attacking Syria, there they did not expect to meet great resistance, and then commence their attack on the UAR.”
Anderson then told Nasser “that it was unfortunate the UAR had believed such reports, which were simply not in accordance with the facts”, to which Nasser responded that his information had come from reliable sources (presumably referring to intelligence information passed along by the USSR)
May 18, 1967
Syria amasses troops in the Golan Heights.
May 19
Egypt expelled the UNEF force from Gaza and Sinai and took up UNEF positions at Sharm el-Sheikh, overlooking the Straits of Tiran.
Israel reiterated declarations made in 1957 that any closure of the Straits would be considered an act of war, or justification for war.
May 20, 1967
Haffez Al Assad, then Syria defense minister, makes this statement:
"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."
May 22–23. Nasser declared the Straits of Tiran closed, blocking Israel's access to the Red Sea to the Indian Ocean.
May 23-27, 1967
Egyptian Field Marshal Amer planned initiating an attack on Israel on May 27, Quoted telling "This time we will be the ones to start the war" meaning to hold the military initiative on the field.
The code-name to that planned attack was Operation Dawn.
This was counter to Nasser's strategy of pushing Israel to start the war, like he had in 1956.
Nasser ordered Amer to hold off the attack and do what they did in 1956 again, hours before the planned launch of the attack.
At 2:30 a.m. on May 27, Soviet Ambassador to Egypt Dimitri Pojidaev knocked on Nasser's door and read him a personal letter from the Soviet first deputy premier, Alexei Kosygin, in which he said, "We don't want Egypt to be blamed for starting a war in the Middle East. If you launch that attack, we cannot support you."
May 30, Jordan and Egypt signed a defense pact. The following day, at Jordan's invitation, the Iraqi army began deploying troops and armored units in Jordan. They were later reinforced by an Egyptian contingent.
June 1 Israel formed a National Unity Government by widening its cabinet.
June 4 The decision was made to go to war. The next morning, Israel launched Operation Focus, a large-scale surprise air strike that launched the Six-Day War.
https://history.state.gov/historical...1964-68v19/ch1
https://en.wikipedia.org/wiki/Origin...he_Six-Day_War
https://www.quora.com/Did-Israel-sta...ay-War-in-1967