No one learns from history "Operation Zafer"

The operation is successful...
The never-before-told story of Sadat's assassination...
That mystery that was and still is indecipherable...
How did circumstances lead a group of a young lieutenant and three comrades belonging to the Jihad organization to assassinate the President of the Republic in his backyard in the middle of a military parade?
How was the plan revealed by the State Security Investigations, but the Egyptian routine, known for its tyranny, prevented it from taking the necessary action and preventing the intended assassination plan?
How did the confusion and chaos lead one of the assassins to leave the stage and take a taxi back to his home as if nothing had happened?