FILE - In this file photo taken from a video distributed by Russian Defense Ministry Press Service, on Wednesday, Dec. 9, 2020, a rocket launches from missile system as part of a ground-based intercontinental ballistic missile test launched from the Plesetsk facility in northwestern Russia. Russia and the United States exchanged documents Tuesday Jan 26, 2021, to extend the New START nuclear treaty, their last remaining arms control pact, the Kremlin said. The Kremlin readout of a phone call between U.S. President Joe Biden and Russian President Vladimir Putin said they voiced satisfaction with the move. (Russian Defense Ministry Press Service via AP, File)