Today marks the 75th anniversary of George Kennan's "Long Telegram," which later became known as "Sources of Soviet Conduct," a sort of play book for the cold war that more or less ended with the fall of the Berlin Wall in 1989.
https://nsarchive.gwu.edu/briefing-book/russia-programs/2021-02-22/george-kennan-long-telegram-75th-anniversary
George Kennan and the Long Telegram - 75th Anniversary | National Security Archive
Washington, D.C., February 22, 2021 - Leading Soviet reformer Alexander Yakovlev discussed the famous Long Telegram with George Kennan in a previously
https://nsarchive.gwu.edu/briefing-book/russia-programs/2021-02-22/george-kennan-long-telegram-75th-anniversary
