California Governor: Climate Change is "a Catastrophic and Existential Threat"

The outgoing governor of California, Jerry Brown, has given a wide-ranging interview saying that the world is getting more dangerous with climate change and nuclear weapons the biggest threats. Governor Brown also described President Trump's plan to build a wall on the Mexican border as an ominous symbol conveying a fortress mentality.
Also in the programme: An exclusive BBC report on the continuing fight to drive the Islamic State group out of Syria; and hackers publish the personal data of hundreds of German politicians
(Picture: California Governor Jerry Brown; Credit: Reuters)