Ellie Cook is a Newsweek security and defense reporter based in London, U.K. Her work focuses largely on the Russia-Ukraine war, the U.S. military, weapons systems and emerging technology. She joined ...

In mid-June 2025, a rumor spread on social media claiming that the U.S. Department of Defense (DOD) shared a Flag Day post on X featuring two Russian flags. Flag Day, celebrated annually on June 14, ...

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