On November 1, 2006, journalist and Russian dissident Alexander Litvinenko was poisoned in London. He died twenty-two days later. The cause of death? Polonium--a rare, lethal, and highly radioactive substance. Here Luke Harding unspools a real-life political assassination story--complete with KGB, CIA, MI6, and Russian mobsters. He shows how Litvinenko's murder foreshadowed the killings of other Kremlin critics, from Washington, DC, to Moscow, and...