The START Treaty, formally known as the Strategic Arms Reduction Treaty, is a bilateral agreement between the United States and Russia aimed at reducing and limiting strategic offensive arms. Initially signed in 1991, it has undergone several extensions and modifications, with the most recent version, New START, signed in 2010. The treaty establishes limits on the number of deployed nuclear warheads and delivery systems, promoting transparency and verification measures. The START Treaty plays a crucial role in nuclear arms control, helping to decrease the risk of nuclear conflict and enhance global security. By fostering cooperation between the two nations, it aims to build trust and reduce the overall number of nuclear weapons, contributing to international stability.