https://theplayersaid.com/2026/11/04/history-behind-the-cards-a-look-at-checkpoint-charlie-from-gmt-games-card-10-moscow-rules/The Players' Aiden2026-11-04T13:00:00+00:00History Behind the Cards – A Look at Checkpoint Charlie from GMT Games – Card #10: Moscow RulesGMT, GMT Games, P500, Germany, Cold War, wargame, Berlin, Wargame Wednesday, Events, Event Card, Solitaire Wargame, 10, History Behind the Cards, Cold War Era, Card #10, Cooperative Mode, Checkpoint Charlie, Russell Brown, 1960's, History Behind the Cards Series, Espionage Missions in 1960's Berlin, Moscow Rules, Papers Item, Tradecraft Markerhttps://theplayersaid.com/wp-content/uploads/2026/06/checkpoint-charlie-history-behind-the-cards-header-2-e1782590467582.png?w=150