Teheran 43 starts in 1980 in Paris. The memories of hero Andrei take the story back to 1943. The Germans planned to assassinate the three men 37 years later, and the German agent Max lives with Françoise, a young Parisian woman, who hides him. But another Nazi, Scherner, is hunting down Max who failed to carry out the planned assassinations. Max trusts Françoise but he does not know that she works for Scherner. Another plot in the movie is the romance between Andrei and the French woman Marie in 1943, followed in 1980.

Max Richard (Armen Dzhigarkhanyan), an assassin of the Nazis, who was 37 years ago hired to assassinate Joseph Stalin, Winston Churchill and Franklin D. Roosevelt during the Tehran Conference, is holed up in today's Paris at the young French woman Françoise (Claude Jade). In flashbacks, he describes Françoise who claims to be a neighbor in his apartment because she mistook the door, the assassination attempts. Max was brought in 1943 to Tehran as a funeral director of a previously murdered Persian. Max also kills the lawyer of the dead, Gérard Simon (Gleb Strizhenov). But Simon's interpreter Marie (Natalya Belokhvostikova) and the young Russian Secret agent Andrei (Igor Kostolevsky) get him on the loose. The two have no time for romance but thwart the assassination. They can arrest a fake photographer (Georges Géret). The man who posed as a photographer and cinematographer "Dennis Pew" had a gun in his movie camera. Andrei, who cares for the safety of the young woman, sends Marie, who is in love with him, to France. They do not see each other again.

When Max wants to publish his memoirs and documents in Paris today with the help of the lawyer Legraine (Curd Jürgens), Andrei travels to Paris. At an auction of Max's documents in London, Andrej sees a young woman who is very similar to Marie. She is Marie's daughter Nathalie. Françoise, meanwhile Max's mistress, also pursues her own goals. She claims to work for his former client Scherner (Albert Filozov) and to have spared Max only out of pity.

In Paris, the paths of Marie and Andreiand of Marie's daughter Nathalie and police inspector Foche (Alain Delon), who chases the former masterminds around Scherner, intersect. During a plane hijacking initiated by Scherner, Andrei meets Nathalie again. Foche, who wants to protect Nathalie's mother, is assassinated in the back. Max gets scared when Marie is killed as a former witness after a short reunion with Andrei. Then, Françoise takes him to a new hiding place.

Andrei visits Nathalie and learns from her that Marie loved him all those years. She told her daughter about swimming together and told her about the dolphins, but those were just her dreams. In his new hideout, Max is shot by Scherner's men. Legraine interrogates Scherner and Françoise; possibly, he will negotiate with them about the manuscript. Andrei travels back to Moscow.

• Natalya Belokhvostikova as Marie/Nathalie
• Igor Kostolevsky as Andrei
• Armen Dzhigarkhanyan as Max
• Alain Delon as Foche
• Claude Jade as Françoise
• Albert Filozov as Scherner
• Curd Jürgens as Legraine
• Nikolai Grinko as Hermolin
• Gleb Strizhenov as Simon
• Vsevolod Sanayev as Innkeeper
• Mike Marshall as Terrorist on Airplane
• Jess Hahn as Terrorist on Airplane
• Jacques Roux as Mr Johnson
• Evelyne Kraft as false secretary
• Natacha Naumova as Marie (child)

The music score for the movie was composed by Georges Garvarentz and Mieczysław Weinberg. Charles Aznavour's theme song "Une vie d'amour" became very popular in the Soviet Union which prompted the singer to record a Russian version titled Vechnaya lyubov (Eternal Love). Aznavour also sung the French version in duet with Mireille Matthieu.

With 47.5 million admissions, the film was the most popular film of 1981 in the Soviet Union. It also won the Golden Prize at the 12th Moscow International Film Festival in 1981.^[1] It was a flop in France,^[2] having only 94,335 admissions.^[3]

• Tegeran-43 at IMDb  
• Teheran '43 at AllMovie
• Review by Darius Kadivar