In November 1943, the leaders of the Soviet Union, the United States, and the United Kingdom convened an important meeting in Tehran. Upon learning of this gathering, German intelligence devised an assassination plot targeting the three leaders. On the evening of November 30, during Winston Churchill's 69th birthday celebration, a private secretary and a waiter orchestrated a dramatic scene. They attempted to assassinate the three leaders with a timed bomb, but their plan was discovered in time, leading to the failure of the conspiracy and allowing the leaders to escape death.