Trump Signs Executive Order To Begin Mexico Wall

President Trump has signed an order to build a wall on the US border with Mexico, one of his main campaign promises.

Also in the programme: interview with the North Korean diplomat turned defector, a new film on the perils of social media for young people and we hear from two survivors of the avalanche in Italy last week that killed twenty-five people.

(Photo: Trump signing executive orders, one to begin the process of building a wall along the US-Mexico border. Credit: Getty Images)