Gareth Porter (born June 18, 1942) is an American historian, investigative journalist, author and policy analyst specializing in U.S. national security policy. He was active as a Vietnam specialist and anti-war activist during the Vietnam War, serving as Saigon Bureau Chief for Dispatch News Service International from 19701971, and later, as co-director of the Indochina Resource Center. He has written several books about the potential for peaceful conflict resolution in Southeast Asia and the Middle East, including his 2005 book Perils of Dominance: Imbalance of Power and the Road to War in Vietnam, an analysis of how and why the United States went to war in Vietnam. Porter's analysis and reporting has appeared in academic journals, news publications and periodicals for four decades, and in 2012 he was the winner of the Martha Gellhorn Prize for Journalism, which is awarded annually by the Frontline Club in London to acknowledge reporting that exposes propaganda.