Pressure mounts on Starmer over what he knew when Mandelson named US ambassador

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A plan to release documents about Lord Mandelson's appointment as US ambassador is approved, after anger from Labour MPs forced the government into a climbdown. We'll ask how much danger the Prime Minister is in and speak to the head of the parliamentary committee that will determine which documents - related to the appointment - will be released. Also on the programme: As a US-Russia nuclear treaty expires, can we expect another arms race? And humour from a Briton who suffered terrible injuries after a shark attack in the Caribbean.