A photo of John Demjanjuk from 1993: After being convicted by an Israeli court in 1988 of being the sadistic Nazi guard known as "Ivan the Terrible" at the Treblinka concentration camp, Demjanjuk was released in 1993 after exculpatory evidence came to light. Now, German prosecutors think he was a guard at Sobibor. The German government is trying to get the American government to deport Demjanjuk to Germany to stand trial.