Beginning with a widely-reprinted article about Zbigniew Brzezinski in the "Washington Post" in August of 1976, "The Man Behind Carter's Foreign Policy," Dr. Duffy has written for many newspapers including the "New York Times", the "Los Angeles Times" and the "Chicago Tribune". She was a columnist for the "Christian Science Monitor" in 1980-82, and for Pacific News Service in the 1980s. She writes a regular column, "Insight", for "The Commonwealth" magazine, as well as periodic op-ed pieces for the "San Francisco Chronicle", "San Jose Mercury News", on Medium and for other online and print publications.