Live Free or Die Hard (released as Die Hard 4.0 outside North America) is a 2007 American action thriller film, and the fourth installment in the Die Hard film series. The film was directed by Len Wiseman and starred Bruce Willis as John McClane. The film's name was adapted from New Hampshire's state motto, "Live Free or Die". In the film, McClane attempts to stop cyber-terrorists who hack into government and commercial computers across the United States with the goal of starting a "fire sale" that would disable key elements of the nation's infrastructure. The film was based on the 1997 article "A Farewell to Arms" written for Wired magazine by John Carlin.
Live Free or Die Hard was released in the United States on June 27, 2007. The film earned total international box office gross receipts of $383.4 million, making it the highest-grossing film in the Die Hard series. It received generally positive reviews from critics, who called the film a return to form for the Die Hard series. It is the only Die Hard film to be theatrically released with a PG-13 rating from the MPAA.