Navalny's poisoning attempted election interference and cyber espionage are just a few of the reasons tensions between the U.S. and Russia have heightened. RELATED: https://youtu.be/XgwcZEemqh4 In another stern warning, the Biden administration said Monday the welfare of Kremlin critic Alexei Navalny is the responsibility of the Russian government and that Russia would be held accountable if he dies. The threat came amid reports that Navalny, who is in his third week of a hunger strike, had been moved to a prison hospital because of rapidly declining health and a statement from his doctor that the government opposition leader could be near death. “What happens to Mr. Navalny in the custody of the Russian government is the responsibility of the Russian government,” White House press secretary Jen Psaki told reporters. » Subscribe to USA TODAY: http://bit.ly/1xa3XAh » Watch more on this and other topics from USA TODAY: https://bit.ly/3sxYKpe » USA TODAY delivers current local and national news, sports, entertainment, finance, technology, and more through award-winning journalism, photos, videos and VR. #Russia #Navalny #Biden