One thing is sure about the recent Hamas attack on Israel: it was a complete shock.
However, it was not the first time Israel has been caught unprepared. There have been two other moments like it.
The first shock was also probably the most important: October 1973. Egyptian and Syrian forces swept through territory under Israeli control, launching a swift and unforeseen war.
Read more: October War: The surprise Arab victory that changed the region
Israel was still in the flush of victory from 1967, when its lightning offensive gave it control of Sinai, the Golan, Gaza, and the West Bank, tripling the area of land under its occupation.
Just six years later, it did not expect the armies of Egypt and Syria to have recovered. Their swift win against Israel’s forces – which were considered unbeatable, even among some Arabs – sent shockwaves throughout the world.
A disorientated Israeli military was caught off of its feet, unable to respond with speed and decisiveness to match. They sought help from the United States. Even then, there were fears that Israel may never recover.
Amid the 1973 Israeli surprise loss came a famous remark attributed to Moshe Dayan, a commander in the 1967 war: "The last one who flees needs to turn off the light."
Read more: The October War relived through the memoirs of top Israeli officials
The most significant consequence of the October War became clear around four years later. It was the electoral rebuke suffered by the Mapai Party and the Labour movement.