Martha Raddatz (//; born February 14, 1953) is an American reporter with ABC News. She is the network's Chief Global Affairs Correspondent. She reports for ABC's World News Tonight with David Muir, Nightline, and other network broadcasts. In addition to her work for ABC News, Raddatz has written for The New Republic and is a frequent guest on PBS's Washington Week. The Guardian said Raddatz "is known for having well-cultivated sources inside the defense department." Martha is the primary fill-in anchor on This Week with George Stephanopoulos.