David Mark @DavidMarkDC
First @cspan appearance by the late Mikhail Gorbachev, final president of the Soviet Union before its dissolution, was Dec. 7, 1987. "Arrival of Soviet Delegation at U.S.-Soviet Summit," Andrews Air Force Base, just outside Washington, D.C. @HowardMortman https://t.co/xy8nmxz8cD — PolitiTweet.org