A serviceman checks his machine-gun in a shelter on the territory controlled by pro-Russian militants at frontline with Ukrainian government forces in Slavyanoserbsk, Luhansk region, eastern Ukraine, Tuesday, Jan. 25, 2022. Ukraine's leaders sought to reassure the nation that a feared invasion from neighboring Russia was not imminent, even as they acknowledged the threat is real and prepared to accept a shipment of American military equipment Tuesday to shore up their defenses. (AP Photo/Alexei Alexandrov)

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