The Intermediate-Range Nuclear Forces (INF) Treaty was a landmark arms control agreement signed in 1987 between the United States and the Soviet Union, which eliminated all nuclear and conventional ground-launched ballistic and cruise missiles with ranges between 500 and 5,500 kilometers. This treaty marked a significant step in reducing the nuclear threat during the Cold War, showcasing a shift in foreign policy where both superpowers moved towards arms reduction and greater cooperation amid escalating tensions, often referred to as the 'Evil Empire' era.