New START

New START (Strategic Arms Reduction Treaty) (Russian abbrev.: СНВ-III, SNV-III from сокращение стратегических наступательных вооружений "reduction of strategic offensive arms") is a nuclear arms reduction treaty between the United States and the Russian Federation with the formal name of Measures for the Further Reduction and Limitation of Strategic Offensive Arms. It was signed on 8 April 2010 in Prague,[2][3] and, after ratification,[4][5] entered into force on 5 February 2011.[1] It is expected to last until 5 February 2026, having been extended in 2021.

New START / СНВ-III
Treaty between the United States of America and the Russian Federation on Measures for the Further Reduction and Limitation of Strategic Offensive Arms

Договор между Российской Федерацией и Соединёнными Штатами Америки о мерах по дальнейшему сокращению и ограничению стратегических наступательных вооружений
Presidents Obama and Medvedev after signing the Prague Treaty.
TypeStrategic nuclear disarmament
Drafted19 May – 9 November 2009
Signed8 April 2010 (2010-04-08)
LocationPrague, Czech Republic
Effective5 February 2011[1]
ConditionRatification of both parties
Expiration5 February 2026 (following extension in 2021)
Signatories
LanguagesEnglish, Russian
Signing the New START Treaty (video in Russian)

New START replaced the Treaty of Moscow (SORT), which was to expire in December 2012. It follows the START I treaty, which expired in December 2009; the proposed START II treaty, which never entered into force; and the START III treaty, for which negotiations were never concluded.

The treaty calls for halving the number of strategic nuclear missile launchers. A new inspection and verification regime will be established, replacing the SORT mechanism. It does not limit the number of operationally inactive nuclear warheads that can be stockpiled, a number in the high thousands.[6]


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