Hamas officials say more than four hundred people have been killed. Does this mean that the ceasefire between Israel and Hamas is over?

Also on the programme: President Trump and President Putin are to have a phone call to discuss a potential ceasefire in Ukraine. We discuss the historical parallels of this occasion; and the legendary jazz musician Herbie Hancock is one of the winners of the Polar Prize, the nearest thing that music has to a Nobel prize. He talks about his life and his extraordinary career.

(Picture: Palestinians inspect the aftermath of an Israeli strike Credit: Reuters / Abed)