Eddie Mair speaks at length to people with interesting things to say, for Radio 4's PM.
Eddie Mair speaks at length to people with interesting things to say, for Radio 4's PM.
John Sipher spent 28 years with the US National Clandestine Service.
Mr Sipher spoke to Eddie Mair about his life undercover, why he's kept a brick from Osama Bin Laden's house, torture, and the Sergei Skripal poisoning.
