Whilst historically correct, be under no illusions, Israel would not exist if they didn't make a pre-emptive attack. There was no room in the equation for waiting and not taking initiative, Israel faced a dire and existential threat and acted.
Rubbish Nasser had no intention attacking. The israeli leadership is on the record that their was nor real Egyptian threat and that they chose war, and that in any event they were sure of victory even if the Egyptians attacked first, which the Egyptians were not prepared to do.