Historically, Kinmen County ('Quemoy') and Lienchiang County ('Matsu') served as important defensive strongholds for the Kuomintang during the 1950–1970s, symbolizing the frontline of Kuomintang resistance against the Communist rebellion. They represented the last Kuomintang presence in "mainland China". The islands received immense coverage from Western (especially United States) media during the First Taiwan Strait Crisis of 1954–1955 and the Second Taiwan Strait Crisis of 1958. They were very significant in the context of the Cold War, a period from 1946 until 1991 of geopolitical tension between the Soviet Union (and its allies) and the United States (and its allies).