sentences:  After he emigrated, Goldfarb maintained contact with dissidents in the Soviet Union and was a spokesman for Moscow refuseniks.He translated for Andrei Sakharov at press conferences in advance of his 1975 Nobel Peace Prize and helped organize the first American television appearance of Sakharov when Mikhail Gorbachev released the physicist from internal exile.From 1984 to 1986 Soviet authorities refused Goldfarb's father permission to leave the USSR after their unsuccessful attempt to make him collaborate and entrap American journalist Nicholas Daniloff.