Full transcript of “Face the Nation with Margaret Brennan,” June 28, 2026

On this episode of “Face the Nation,” hosted by Margaret Brennan, the focus was on the escalating tensions between the U.S. and Iran, particularly following a heated exchange between President Trump and Republican Senator Bill Cassidy of Louisiana. The conflict arose after Cassidy, along with three other Republican senators, voted against the president’s decision to launch a war with Iran without congressional approval. Despite the initial disagreement, Cassidy later supported the president on a subsequent measure after a private briefing with Vice President Vance and special envoy Steve Witkoff. In an exclusive interview, Cassidy described his interaction with President Trump as initially confrontational but ultimately constructive, as they aimed to establish a working relationship. The episode also featured discussions with Virginia Senator Tim Kaine about the Democratic Party’s shift to the left and covered other significant news of the week, including the ongoing U.S. military actions in response to Iranian attacks on Gulf allies. QUESTION: How might the ongoing tensions between the U.S. and Iran impact international relations and global stability in the coming years?