Flight chaos caused by 'millisecond' software defect.

More details emerge on the fault which left 2,000 flights cancelled. We'll discuss the resilience of our transport network with former minister, Sir Grant Shapps. Also on the programme, Prince Diana's brother insists he is "telling the truth" about a phone call with the King. We'll bring you Earl Spencer's exclusive interview with the BBC.
As President Macron says Russian hybrid attacks against Europe are intensifying, we speak to General Sir Richard Barrons, co-author of the Strategic Defence Review. And, Simon Reeve comes into the studio to discuss his travels through some of the planet's most remote landscapes.