Former Kremlin leaders have been on the record as using body doubles, including longtime Soviet supremos Josef Stalin and Leonid Brezhnev.

Source: https://metro.co.uk/2023/04/25/putin-spokesman-claims-hes-healthy-and-doesnt-use-body-doubles-18668111/

In 1943, President Franklin D. Roosevelt, British Prime Minister Winston Churchill and Soviet leader Josef Stalin began conferring in Tehran during World War II.

Source: https://wtop.com/back-in-the-day/2023/11/today-in-history-november-28-bostons-cocoanut-grove-nightclub-fire-kills-492/

Putin, who was handed the presidency by Boris Yeltsin on the last day of 1999, has been leader for longer than any other Russian ruler since Josef Stalin, beating even Leonid Brezhnev’s 18-year tenure.

Source: https://cyprus-mail.com/2023/10/03/putin-may-soon-announce-run-in-russias-2024-election/