The London Charter of the International Military Tribunal was a set of rules agreed to by the United Kingdom, United States, France, and the Soviet Union. This charter was drafted by the four countries after World War II to set out rules for trying and punishing people who had been involved in war crimes. The International Military Tribunal was formed to ensure that people accused of war crimes were treated fairly and judged according to the law. The London Charter set out how a trial for a war crime would be conducted: what evidence could be presented, who would decide whether the accused was guilty, and what the punishment would be if the accused was found guilty. The Charter also enabled other countries to try war criminals in their own courts following the same procedures. This meant that people involved in war crimes could be punished for their actions, no matter where they had committed them.