Live Free or Die Hard (released as Die Hard 4.0 outside North America) is a 2007 American action 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. Unlike the prior three films in the series, the U.S. rating was PG-13 rather than R.