Winston Churchill was known for his "Iron Curtain" speech delivered in 1946. In this address, he articulated the division of Europe during the early stages of the Cold War, warning about the influence of the Soviet Union and the spread of communism across Eastern Europe. The phrase "Iron Curtain" symbolized the ideological and physical boundary that separated the democratic nations of the West from the authoritarian regimes in the East. Churchill's speech is considered a defining moment in the Cold War, shaping public perception of the geopolitical landscape and underscoring the need for unity among Western nations against Soviet aggression.