New Strategic Arms Reduction Treaty (START)

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Signed by Presidents Obama and Medvedev on April 8, 2010, New START replaces the 1991 START treaty limiting U.S. and Russian strategic nuclear weapon systems. The agreement introduces lower ceilings for the numbers of deployed warheads and delivery systems, and continues many of the necessary verification procedures. New START entered into force on February 5, 2011.

  • Treaty text (U.S. State Department)

  • For associated Protocol, Annexes, Unilateral Statements, and latest reports on aggregate numbers of Strategic Offensive Arms for both parties, visit this page on the State Department’s website. 

The New START Treaty entered into force on February 5, 2011. 

Further Reading