Ex-judge Thomas Walther is pictured in a courtroom in Munich February 2, 2010, before accused Nazi death camp guard John Demjanjuk arrives. Walther is one of the key figures behind the decision to try Demjanjuk, who will be the first non-German alleged Nazi collaborator to stand trial in a German court. Demjanjuk, an 89-year-old former U.S. auto worker, is on trial in Germany facing charges he helped force 27,900 Jews into gas chambers in Sobibor extermination camp in 1943.  REUTERS/Michaela Rehle (GERMANY - Tags: POLITICS CIVIL UNREST CRIME LAW)