"Under Siege" is a 1992 American action thriller film directed by Andrew Davis and written by J. F. Lawton. It stars Steven Seagal as a former Navy SEAL who must stop a group of mercenaries, led by Tommy Lee Jones, on the U.S. Navy battleship "Missouri".

Released on October 9, 1992, "Under Siege" was successful in critical and financial terms, receiving two Oscar nominations for sound production and is often considered Seagal's best film to date.

The film was based on an original spec script by J. F. Lawton called Dreadnought which sold for $1 million.

Warners wanted Steven Seagal to star in the film but he turned it down at first. Seagal later said he had problems with the role of a character "who is at first a bimbo jumping out of a cake and gets paired up with me." But he said that in revisions of the script, the role became a character "who gradually reveals her intelligence."

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