Nobel Peace Prize nominee and anti-nuclear campaigner Dr Helen Caldicott says the risk of nuclear war is greater than ever right now. In fact, she puts the threat as even more than it was during the Cold War.
The Doomsday Clock is currently set at three minutes to midnight, the closest it's been since 1953, when it got to just two minutes to midnight.
Today, in Chicago, they're assessing the time again and whether Donald Trump's election will change its setting.
Dr Caldicott joined Paul Henry to give her thoughts on the world post-US election.
Watch the video.