World Service

Iran threatens to reverse its decision to reopen the Strait of Hormuz unless the United States ends its blockade of Iranian ports. Also on today's programme: President Trump insists the US will take possession of Iran's highly enriched uranium as part of a deal to end its nuclear programme, contradicting Iran's stance on the matter; and we are joined by the granddaughter of Ludwig Koch, a pioneering nature broadcaster who became a household name in Britain in the 1930s after fleeing Nazi Germany. Presenter Gary O'Donoghue is joined by Anna Matveeva, senior visiting research fellow at the Russia Institute at King's College London, and Chietigj Bajpaee, senior research fellow for South Asia at the international affairs think tank Chatham House. (Photo: A satellite image shows the ship movement at the Strait of Hormuz on April 17, in Space. Credit: Copernicus Sentinel -2/Reuters)