Russian businessman Dmitry Kovtun arrives for a news conference at Interfax headquarters in Moscow, Russia, Wednesday, April 8, 2015. Russian agent Kovtun, who was accused by the U.K. authorities in the poisoning death of former spy Alexander Litvinenko in London in 2006, died Saturday, June 4, 2022, at age 57. (AP Photo/Pavel Golovkin, File)
