A Ukrainian National guard soldier guards the mobile checkpoint together with the Ukrainian Security Service agents and police officers during a joint operation in Kharkiv, Ukraine, Thursday, Feb. 17, 2022. Fears of a new war in Europe have resurged as U.S. President Joe Biden warned that Russia could invade Ukraine within days, and violence spiked in a long-running standoff in eastern Ukraine that some fear could be the spark for wider conflict. (AP Photo/Evgeniy Maloletka)
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