Former Iran detainees Siamak Namazi and Emad Shargi, who were among five U.S. citizens freed in a 2023 high-stakes diplomatic deal, tell "Face the Nation" moderator Margaret Brennan that they're worried about Americans held in Iranian prisons as the U.S. war there continues. Watch their full panel discussion. "Face the Nation" is America's premier Sunday morning public affairs program. The broadcast is one of the longest-running news programs in the history of television, having debuted Nov. 7, 1954, on CBS. Every Sunday, "Face the Nation" moderator and CBS News senior foreign affairs correspondent Margaret Brennan welcomes leaders, newsmakers, and experts to a lively round table discussion of current events and the latest news.