Manori Ravindran International Editor The David Tennant-starring “Litvinenko” has sold into AMC+ and Sundance Now in the U.S., along with a host of other buyers in 80 international markets. The drama has pre-sold ahead of its debut on ITV’s forthcoming U.K. streaming service ITVX, which launches this fall, and NENT Group’s Viaplay streaming service in the Nordics, Netherlands, Poland and Baltics. Written by George Kay (“Lupin”) and produced by Patrick Spence, ITV Studios and Tiger Aspect Productions, the drama tells the story of Alexander Litvinenko, the former Russian Federal Security Services and KGB officer, whose death from polonium poisoning in November 2006 triggered one of the most complex and dangerous investigations in the history of the Metropolitan Police.