Wednesday 8 March

As Ukraine denies any involvement in blowing up the Nordstream 2 pipeline, we examine what might have happened. Plus, protests in Tbilisi turn violent after the government backs a new law on foreign agents; we celebrate the work of David Chipperfield, this year’s winner of the Pritzker prize, and we shine a light on the cinema of Bhutan. See omnystudio.com/listener for privacy information.