Pierre Frondaie

An Arab prince born and raised in the desert and a beautiful Frenchwoman from Paris fall in love and marry, but the tremendous differences in their backgrounds and the cultural differences between their two different societies put strains on their marriage that may well prove irreparable. (imdb)

The almost financial ruined French gentleman Gaston Dewalter spends several day in Biarritz before going off in the Hispano-Suiza, a luxe car which was a present from his friends. George becomes the lover of Lady Stéphane Oswill pretending he is wealthy. Then Stéphane spends the remaining funds with which the now desperate George hoped to rebuild his fortune in Senegal. (imdb)

The story is about Conrad Veidt as military attache in Turkey where he learns to know an English consul (Heinrich George) and his attractive wife who is treated badly. They begin an affair and soon the husband proves to be an obstacle that has to be disposed of.

In the lead-up to the First World War, a French military attaché falls in love with the wife of a prominent German in Stamboul in the Ottoman Empire. (Wikipedia)

French-language remake of Port Arthur (1936): espionage, action and romance in the Russo-Japanese War, as the conflict threatens Russian naval officer Boris Ranewsky and his Japanese wife Youki.

While living in Constantinople, the wife of Sir Archibald Falkland is forced to co-exist with his mistress, Lady Edith. Falkland plots to frame his wife for adultery, thereby forcing her to consent to a divorce, by placing her in a compromising situation with Prince Cerniwicz. However, an old flam of Lady Falkland's, Colonel Loring, comes to her defense.