FILE - Secretary of State Dean Acheson signs the Atlantic defense treaty for the United States, April 4, 1949. Vice President Alben W. Barkley, left, and President Harry Truman converse during the signing. Finland and Sweden are nearing decisions on whether to ditch their long-standing policy of military nonalignment and join NATO in the wake of Russia's invasion of Ukraine. Finnish President Sauli Niinisto is expected to announce his stance on NATO membership on Thursday, May 12, 2022. (AP Photo/File)
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