The concept of Western Betrayal refers to the view that United Kingdom and France failed to meet their legal, diplomatic, or moral obligations with respect to Czechoslovakia during the Munich Agreement and subsequent Occupation of Czechoslovakia by Nazi Germany, as well as to Poland on the eve of the World War II. The same concept also refers to the concessions made by the United States and the United Kingdom to the USSR during the Teheran, Yalta and Potsdam conferences, to their stance during the Warsaw Uprising, and some other events. Historically, such views were intertwined with some of the most significant geopolitical events of the 20th century, including the rise and empowerment of the Third Reich (Nazi Germany), the rise of the Soviet Union (USSR) as a dominant superpower with cont