Lord of War

Lord of War is a 2005 American crime drama film, written, produced, and directed by Andrew Niccol, and co-produced by and starring Nicolas Cage. In the early 1980s, Yuri Orlov, the eldest son of a family of Ukrainian refugees, is visiting a Brighton Beach restaurant, where he witnesses a Russian mobster kill two would-be assassins holding Kalashnikov rifles. The incident inspires him to go into the arms trade; Yuri muses that the constant need for weapons is similar to the human need for food and drink, thus he can make a fortune. After successfully completing his first sale of an Uzi sub machine gun to a local mobster, Yuri convinces his younger brother, Vitaly, to become his partner.
The two brothers get their first big break during the 1982 Lebanon War, where they sell weapons to both Israeli and Lebanese troops despite witnessing the same weapons being used to commit war crimes and other atrocities. As Yuri begins to prosper by exploiting his growing network of business connections, he comes to the attention of Interpol; in particular, an idealistic agent named Jack Valentine, with whom he crosses paths on multiple occasions. Valentine represents a unique threat to Yuri because he is after glory, not money, and thus cannot be bought off.
Vitaly becomes addicted to cocaine after a Colombian drug lord forces the brothers to accept several kilos of cocaine to pay for an arms sale of numerous Glock 17 pistols. Yuri quietly checks Vitaly into a drug rehabilitation clinic and continues his business alone. He lures childhood crush Ava Fontaine to a false photo shoot, and they subsequently get married and have a son.
Following the dissolution of the Soviet Union, Yuri flies to Ukraine and illegally buys Russian tanks, guns, and munitions through his uncle, a former Soviet general who is overseeing the distribution of weapons to the newly-formed Ukrainian army.