New START (Strategic Arms Reduction Treaty) (Russian: СНВ-III,
SNV-III) is a
nuclear arms reduction treaty between the
United States of America 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, and, after ratification, entered into force on 5 February 2011. It is expected to last at least until 2021.