Finland's flag is raised during a ceremony outside NATO headquarters in Brussels, the Nordic state officially joining the military alliance Tuesday, April 4, 2023. This comes less than a year after the country submitted its application in response to Russia's invasion of Ukraine. The ceremony falls on NATO's very own birthday, the 74th anniversary of the signing of its founding Washington Treaty on April 4, 1949. NATO Secretary-General Jens Stoltenberg told reporters ahead of a meeting of NATO f

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