President Trump has said Saudi Arabia will face severe punishment if the allegation that it murdered the journalist Jamal Khashoggi is proved true. We hear from a journalist in Istanbul the latest in the investigation into the disappearance of Mr Khashoggi -- and ask a former state department official what the US options are. Also in the programme: singer songwriter Elvis Costello on how the playlist has changed the way his music is listened to; and are algorithms reinforcing sexist biases in the recruitment of employees in the tech sector?(Photo: Jamal Khashoggi. Credit: AFP)