Munich (2005) on Netflix

In September 1972, Palestinian terrorists, posing as athletes, are able to infiltrate the relatively unsecured athlete's village at the Summer Olympic Games in Munich, where they take Israeli athletes and coaches hostages, the release of who they consider illegally held Arab prisoners in Israel the requested ransom. Because the Israeli government refuses to negotiate, the terrorists, who end up being referred to as Black September, end up killing eleven of those hostages. Beyond the official Israeli response to the massacre, the Israeli government forms a covert team whose mission is to assassinate those eleven they see as responsible that are living in the western world. This team will have no official ties to the government or Mossad, including to their official unofficial handler, Ephraim. Although not an obvious choice on the surface, they choose as as head of this disparate five man team Avner Kaufman, a Mossad agent, former bodyguard to Prime Minister Golda Meir and son of a respected Israeli military leader. As the team goes about their mission, they agree to disagree about many aspects of what they are doing, including its purpose and what collateral damage is considered acceptable. They also have to alter plans based on the reaction by the Arab to their killings. Avner and the team will learn that the lines between who is considered a friend and a enemy can often be blurred.