Again, I doubt you can produce any evidence that Egypt's claimed blockade was even been enforced when Israel attacked, and I haven't seen any confirmation of your claim of Syria and Jordan massing troops either. Egypt did put a couple of tank battalions on the boarder, but they were obviously bluffing which Israel called them on and dealt with swiftly.
The 1967 War (The Six-Day War)
After a period of relative calm, border incidents between Israel and Syria, Egypt, and Jordan increased during the early 1960s, with Palestinian guerrilla groups actively supported by Syria.
In May, 1967, President Nasser, his prestige much eroded through his inaction in the face of Israeli raids, requested the withdrawal of UN forces from Egyptian territory, mobilized units in the Sinai, and closed the Gulf of Aqaba to Israel. Israel (which had no UN forces stationed on its territory) responded by mobilizing. 7
The escalation of threats and provocations continued until June 5, 1967, when Israel launched a massive air assault that crippled Arab air capability. With air superiority protecting its ground forces, Israel controlled the Sinai peninsula within three days and then concentrated on the Jordanian frontier, capturing Jerusalem?s Old City (subsequently annexed), and on the Syrian border, gaining the strategic Golan Heights. The war, which ended on June 10, is known as the Six-Day War. 8
The Suez Canal was closed by the war, and Israel declared that it would not give up Jerusalem and that it would hold the other captured territories until significant progress had been made in Arab-Israeli relations. The end of active, conventional fighting was followed by frequent artillery duels along the frontiers and by clashes between Israelis and Palestinian guerrillas. 9
http://worldnews.about.com/od/...eas1/i/arabisraeli.htm
The 1967 Six Day War was launched in response to Egypt, Syria, and Jordan massing troops along Israel's borders; in the war, Israel captured territory including the West Bank and the Gaza Strip and more Palestinians fled. In the 1973 Yom Kippur War, Egypt and Syria attacked on the High Holy Day, resulting in a tougher fight for the Israelis and the eventual downfall of Prime Minister Golda Meir's government.