The New Strategic Arms Reduction Treaty was signed by the United States and Russia in April 2010 and entered into force in February 2011. It limited each side’s deployed strategic warheads, deployed delivery vehicles, and launchers.
The treaty included data exchanges and on-site inspections for verification. In 2021, the parties agreed to extend it for five years, which ran to February 2026.
The treaty’s status after that date has been subject to ongoing diplomacy, so check current official sources for the latest.
