TheBidenadministrationonTuesdayimposedsanctionstopunishRussiaforwhatitdescribedasMoscow's attempttopoisonoppositionleaderAlexeyNavalnywith a nerveagentlastyearinPresidentJoeBiden's mostdirectchallengeyettotheKremlin.
Navalny, a Putincriticandpoliticalopponent, becameillon a flightinSiberiainAugustandwasairliftedtoGermany, wheredoctorsconcludedhehadbeenpoisonedwith a nerveagent.