Former M16 chief fears military clashpublished at 13:39 Greenwich Mean Time 11 November 2016
The World at One
BBC Radio 4
On Donald Trump's victory in the US presidential election - BBC Radio 4's World at One has been speaking to former MI6 chief Sir John Sawers, who says he is concerned.
He told the programme: "I think the biggest threat is a military clash between the great powers. That could have widespread devastation."
Asked whether he felt that was a genuine risk, he told the programme: "It's been a risk ever since nuclear weapons were invented. We are getting back into a world which is quite dangerous."