Ten Dead in St Petersburg Metro Explosion

Authorities in the Russian city of St Petersburg say ten people have been killed in an explosion on the metro system that's being treated as a suspected terrorist attack. We hear from an eyewitness, a journalist at the scene and a security analyst.

Also on the programme: The Mexican newspaper that shut down after one of its reporters was shot dead. And is there a link between Marine Le Pen and the Kremlin?

(Image: The damaged train carriage at Technological Institute metro station in St Petersburg. Credit: AFP/Getty Images)