Dmitri Kovtun
The US sanctions two Russians accused of poisoning ex-KGB spy Alexander Litvinenko
The Obama administration has sanctioned Andrei Lugovoi and Dmitri Kovtun as alleged assassins of Alexander Litvinenko, a former Russian spy. The two are believed to be among the top allies of Russian President Vladimir Putin.
The two men allegedly poisoned Litvinenko in London in 2006.