The Strategic Arms Reduction Treaty (START) is a bilateral agreement between the United States and Russia aimed at reducing the number of strategic nuclear weapons. Initially signed in 1991, it marked a significant step in arms control during the post-Cold War era, focusing on limiting the deployment of intercontinental ballistic missiles and nuclear warheads. START has undergone several iterations, with the most recent version, known as New START, signed in 2010. This treaty continues to promote transparency and verification measures, ensuring both nations adhere to agreed limits on their nuclear arsenals, thereby contributing to global security and stability.