John Sweeney is a writer and journalist who, when working for the BBC, has challenged dictators, despots, cult leaders, con artists and crooked businessmen for many years. Sweeney has covered wars and chaos in one hundred countries and been undercover to a number of tyrannies, including Chechnya, North Korea and Zimbabwe. The author of fifteen books including the Sunday Times best- seller Killer in the Kremlin, he reports on the war in Ukraine from his twitter handle @johnsweeneyroar