Unspun World with John Simpson S05 E21 21/01/2026: Trump One Year On, Iran’s Uprising, and Alzheimer’s Diagnosis

This week Caroline Hawley, in discussion with the BBC's unparalleled range of experts across the world, looks at Donald Trump's first year of his second term, analyses the repercussions of the uprising against the clerical establishment in Iran, and explores whether a new blood test could transform the early diagnosis of Alzheimer's disease.