US response: Trump aides and red lines

President Trump told Iranian protesters that help was “on its way” and encouraged them to keep demonstrating. Around 2,000 people, including some of the country’s security forces, have now reportedly been killed since protests began. We hear from the uncle of a 23-year-old fashion student who is one of the casualties.

Also in the programme: how scientists in Japan might have identified how to limit procrastination; and the enduring appeal of the queen of crime-writing, Agatha Christie.

(Photo: US President Donald Trump in Dearborn, Michigan, US, 13th January 2026. Credit: Reuters/Evelyn Hockstein)