The following is the Sept. 27, 2018 Congressional Research Service report, The New START Treaty: Central Limits and Key Provisions.
The United States and Russia signed the New START Treaty on April 8, 2010. After more than 20 hearings, the U.S. Senate gave its advice and consent to ratification on December 22, 2010, by a vote of 71-26. Both houses of the Russian parliament—the Duma and Federation Council—approved the treaty in late January 2011, and it entered into force on February 5, 2011,...
https://news.usni.org/2018/10/04/report-congress-new-start-treaty