Step 1 : Introduction to the question ""Keep your friends close, but your enemies closer" is a classic line from what movie sequel?"
...The Godfather Part II is a 1974 film produced and directed by Francis Ford Coppola from a screenplay co-written with Mario Puzo, starring Al Pacino and Robert De Niro. “Keep your friends close, but your enemies closer” is an iconic line delivered by Michael Corleone (Al Pacino) in the film. The famous line is ranked #58 in the American Film Institute's list of the top 100 movie quotations in American cinema. That portion has often been attributed to Sun Tzu but there are no published sources yet found which predate its use in this film.