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FILE - In this file photo taken on Thursday, March 30, 2017, Russian opposition leader Alexei Navalny, right, shows a V-sign for the media in court in Moscow, Russia. As Russia's most determined and durable opposition figure, Alexei Navalny has employed an astute understanding of social media and an accountant's ability to wade through financial data, a knack for sardonic humor and fierce resolve in the face of repeated threats. Now, his family, friends and supporters have a new reason to worry. The 44-year-old opposition remained in grave condition in a Siberian hospital Friday more than a day after he became ill on a flight back to Moscow and fell into a coma. His allies suspect he drank poisoned tea before boarding the plane. (AP Photo/Evgeny Feldman, File)