Googlicious post there Toad.
Allow me to retort with one of my own:
Yom Kippur On October 6, 1973, Yom Kippur (the Day of Atonement), the holiest day on the Jewish religious calendar, Egypt and Syria took advantage of optimal circumstances to launch attacks that took Israel by surprise. So complete was the element of surprise that when war erupted, Israel was only beginning to mobilize the reserve forces which form the bulk of the IDF. The thin forces stationed along the two fronts had to contain the invading armies until the IDF was prepared to meet them in force. The IAF was hampered by the dense anti-aircraft missile system which the enemy had deployed close to the front. Egyptian forces succeeded in crossing the Canal and establishing beachheads on the Israeli-held east bank. On the Golan Heights, the Syrians pushed past the cease-fire lines and occupied a large area. They also seized the key Israeli intelligence- gathering position high on Mt. Hermon.
Within two days, the IDF, now fully deployed, blocked the Egyptian and Syrian advances and took the offensive. Because of the huge quantitative superiority of the Syrian forces, a situation compounded by the proximity of Jewish settlements on the Syrians' path of advance, it was decided to give priority to the northern front. By October 10, the Syrians had been pushed back and the entire Golan was again in Israeli hands, except for the Hermon position, which was only recaptured toward the end of the war. Between October 11 and October 14, the IDF pushed the Syrian forces across the cease-fire lines and penetrated Syrian territory. An Iraqi expeditionary force dispatched to reinforce the Syrians was also successfully blocked.
On the southern front, an early Israeli counter-offensive failed. But Israeli units managed to overcome an attack by Egyptian tank forces, destroying 200 enemy tanks in the process. Shortly afterward, on 15 October, the IDF renewed the counter-offensive. The main thrust of the fighting now was to push across the Canal and strike at Egyptian forces on the other side.
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I'm not saying the airlift didn't help...not at all. But "key factor in Israeli survival" is going a bit far. Notice this link states that within 2 days the Israelis had blocked the Egypitians and Syrians and were on the offensive.