In their desperation, the OAS turn to a foreign assassin. What makes them believe that the Jackal might succeed where they have failed, and how does this prove correct or incorrect?

What fundamentals do Lebel and the Jackal share? How do Lebel and the Jackal differ? To what degree do any other characters embody these fundamentals or differences?

Claude Lebel, by his own reckoning, becomes the most powerful police officer in Europe. How does he make use of these newfound powers, and what does his path reveal about his character?