sentences:  Goldfarb later explained in interviews that he had drafted the statement at Litvinenko's request and that Litvinenko had signed it in the presence of a lawyer.With Berezovsky, Litvinenko's widow Marina, and the human rights lawyer Louise Christian, Goldfarb founded the Litvinenko Justice Foundation to campaign for the truth about his murder, and for the perpetrators to be brought to justice.He later testified in a libel suit, in which Berezovsky successfully contested the claim by Russian state television station RTR (now Russia 1) that he had murdered Litvinenko.