How will Artificial Intelligence transform US warfare?

How will AI transform US warfare? We speak to Lieutenant-General Jack Shanahan, the head of the US Department of Defence's Joint Artificial Intelligence Centre.

Also in the programme: Suicide bomb attacks in the Tunisian capital, and the whales freed from 'prison' in Russia.

Picture: a prototype quadrotor unmanned aerial vehicle (UAV) in the Unmanned Systems Laboratory at the Naval Postgraduate School in Monterey, California. Credit: Tony Avelar/The Christian Science Monitor/Getty Images.