Finland formally joined NATO on Tuesday and essentially doubled the military alliance’s border with Russia amid the year-long war in Ukraine—drawing a warning from the Kremlin.
The move by Finland, which shares an approximately 832-mile border with Russia, will bolster NATO’s eastern flank as Finnish Foreign Minister Pekka Haavisto completed the accession process by handing over an official document to U.S. Secretary of State Antony Blinken at its headquarters in Brussels, Belgium.
