Iron Man 2 is a 2010 American superhero film based on the Marvel Comics character Iron Man. It is the sequel to 2008's Iron Man, the second piece in a planned trilogy, and is the third film released as part of the Marvel Cinematic Universe. Directed by Jon Favreau and written by Justin Theroux, the film stars Robert Downey, Jr., Gwyneth Paltrow, Don Cheadle, Scarlett Johansson, Sam Rockwell and Mickey Rourke. Set six months after the events of Iron Man, Tony Stark has revealed his identity as Iron Man and is resisting calls by the United States government to hand over the technology. Ivan Vanko, meanwhile, has developed the same technology and built weapons of his own. Following the successful release of Iron Man in May 2008, Marvel Studios announced and immediately set to work on producing a sequel. In July of that same year Theroux was hired to write the script, and Favreau was signed to return and direct. Downey and Paltrow were to reprise their roles from Iron Man, while Cheadle was brought in to replace Terrence Howard in the role of James Rhodes. In the early months of 2009, Rourke, Rockwell and Johansson filled out the supporting cast, and the film went into production that summer. Like its predecessor the film was shot mostly in California, except for a key sequence in Monaco.