The New START Treaty: Central Limits and Key Provisions. CRS Report for Congress, May 3, 2010

START—on April 8, 2010. This treaty is designed to replace the 1991 Strategic Arms Reductions Treaty (START), which expired, after 15 years of implementation, on December 5, 2009. New START will enter into force when the U.S. Senate provides its advice and consent to ratification and the Russian Parliament approves the Treaty. When it enters into force, New START will supersede the 2002 Strategic Offensive Reductions Treaty (known as the Moscow Treaty), which was slated to remain in force until the end of 2012. New START provides the parties with 7 years to reduce their forces, and will remain in force for a total of 10 years.