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Historically, the importance of Greenland was noted back during the Cold War era when the U.S. expressed interest in acquiring the island to establish military bases. President Truman proposed purchasing Greenland for $100 million in gold in 1946, citing its strategic value in countering Soviet power. The necessity of having a presence in Greenland was further solidified with the establishment of U.S. radar bases, allowing for advanced warnings of any potential military aggression by Russia.