Please answer the following question about this movie plot. If it's un-answerable, please output "No answer". Question: Who does Vassili vow to kill? Movie plot title: Enemy at the Gates Movie plot: In 1942, following the invasion of the Soviet Union the year before, Vasili Zaitsev (Jude Law), a shepherd from the Ural Mountains who is now a soldier in the Red Army, finds himself on the front lines of the Battle of Stalingrad. Forced into a suicidal charge by barrier troops against the invading Germans, he uses impressive marksmanship skillstaught to him at a young age by his grandfatherto save himself and commissar Danilov (Joseph Fiennes). Nikita Khrushchev (Bob Hoskins) arrives in Stalingrad to coordinate the city's defences and demands ideas to improve morale. Danilov, now a senior lieutenant, suggests that the people need figures to idolize and give them hope, and publishes tales of Vasily's exploits in the army's newspaper that paint him as a national hero and propaganda icon. Vasili is transferred to the sniper division, and he and Danilov become friends. They also both become romantically interested in Tania Chernova (Rachel Weisz), a citizen of Stalingrad who has become a private in the local militia. Danilov has her transferred to an intelligence unit away from the battlefield. With the Soviet snipers taking an increasing toll on the German forces, German Major Erwin Konig (Ed Harris) is deployed to Stalingrad to take out Vasili and thus crush Soviet morale. A renowned marksman and head of the German Army sniper school at Zossen, he lures Vasili into a trap and kills two of his fellow snipers, but Vasili manages to escape. When the Red Army command learns of Konig's mission, they dispatch Konig's former student Koulikov (Ron Perlman) to help Vasili kill him. Konig, however, outmaneuvers Koulikov and kills him with a very skillful shot, shaking Vasili's spirits considerably. Khrushchev pressures Danilov to bring the sniper standoff to a conclusion. Sasha, a young Soviet boy, volunteers to act as a double agent by passing Konig false information about Vasili's whereabouts, thus giving Vasili a chance to ambush the major. Vasili sets a trap for Konig and manages to wound him, but during...
The major