Further reading: Nuclear terrorism in London
Daily Mail: Litvinenko political shockwaves
Quote: Just two hours before his death, there had been another startling twist in the story. New medical tests revealed that the fatal poison was not thallium but polonium-210, one of the world’s most tightly controlled radioactive isotopes and a critical component in the making of early-stage nuclear bombs.
Independant: From Russian Orthadox to Islam
Telegraph: British terrorists the biggest threat to U.S