Ronin is a 1998 American action thriller film directed by John Frankenheimer and written by John David Zeik and David Mamet, under the pseudonym Richard Weisz. It stars Robert De Niro, Jean Reno, Natascha McElhone, Stellan Skarsgård, Sean Bean, and Jonathan Pryce. The film is about a team of former special operatives hired to steal a mysterious, heavily guarded briefcase while navigating a maze of shifting loyalties. The film was praised for its realistic car chases in Nice and Paris.