1. ALEXANDER LITVINENKO
Alexander Litvinenko was a former member of the FSB, Russia’s secret service and successor to the KGB, before he defected from the state and was granted asylum in the United Kingdom. He then lived in London with his family working as a journalist and consulting with British intelligence services.
He was killed in November of 2006, when he fell ill with acute radiation syndrome from ingesting a lethal dose of Polonium 210. The radioactive substance had been served in a teapot at the Millennium Hotel in London, which was discovered when police followed a trail of radiation throughout the city.
A number of investigations have been carried out since the murder but Russia has frustrated attempts by British authorities to extradite suspects. In 2015, Scotland Yard said, “The evidence suggests that the only credible explanation is in one way or another the Russian state is involved in Litvinenko’s murder.”