He has been with Magnum Photos, the prestigious photography agency founded by Robert Capa, since 1971. His photographs are exhibited in and collected by the Metropolitan Museum of Art, New York; Museum of Modern Art, New York; the Chicago Art Institute; and the Minneapolis Institute of Art, among others. His books include Telex Iran: In the Name of the Revolution, The Silence, Farewell to Bosnia, The Graves: Srebrenica and Vukovar (with Eric Stover), and A Village Destroyed, May 14, 1999: War Crimes in Kosovo (with Fred Abrahams and Eric Stover).