Every flatfoot would think of who benefited from the murder. That's not Pootin for sure. He could off Litvinenko anytime after 2000 not now.
Pooty Putin or person who hired Bell Pootynger Communications for this PR stunt.
For starters, why Litvinenko is called "a spy" when he was no spy? He neither spied for Russia, nor he spied for Britain.
The Soviets used to send this message all the time.
Regards, Ivan