Iran did cut off direct diplomatic talks with the U.S. following Trump's extreme threats, but the headline overclaims—back-channel communications through mediators remain active according to multiple sources. This is part of a high-stakes standoff: Trump threatened via social media to destroy Iran's bridges and power plants unless Tehran opens the Strait of Hormuz, and Iran has blocked most oil transit through the strait since the war began in late February, leading to a historic oil supply shock with global energy prices soaring. The diplomatic rupture is real, but calling it 'all' channels is inaccurate—what's actually happening is tactical signaling by Iran and maximum pressure by Trump hours before a stated deadline.