Red Sun (French: Soleil rouge, Italian: Sole rosso) is a 1971 Spaghetti Western film directed by Terence Young and starring Charles Bronson, Toshirō Mifune, Alain Delon, Ursula Andress, and Capucine.

[3] The Franco-Italian international co-production was filmed in Spain by the British director Young, with a screenplay by Denne Bart Petitclerc, William Roberts, and Lawrence Roman from a story by Laird Koenig.

By Gauche's order, the bandits double-cross Link by throwing dynamite into the train car he is in, leaving him for dead.

While tracking Gauche, Kuroda reveals that his countrymen's ancient links to their own culture and the samurai's values are disappearing, and he believes the only way to honor his ancestors and his own way of life is to bring back the sword.

En route to the exchange, Christina escapes from the duo and runs into a band of Comanches, killing one as he assaults her.

In retribution, the leader has her bound and her neck tied with wet rawhide, which slowly strangles Christina as the sun dries it out.

Link, however, having decided that Kuroda's honor is more important, kills him and promises the dying samurai that he will return the sword to the ambassador.

Shortly before the ambassador's train arrives, he hangs the sword from the telegraph wire in front of the station, fulfilling his pledge.

Film director John Landis has an uncredited appearance as a henchman killed by Mifune's character.