Sixty years ago this month, the US and Soviet Union came close to the brink of nuclear war during a tense 13-day stand-off known as the Cuban Missile Crisis. So how did we get that close? How did we successfully de-escalate? Tom Collina discusses this historical event with Dr. Tom Vaughan, lecturer at Aberystwyth University and author of “Nuclear war: does it take luck or reasoning to avoid it? Lessons from the Cuban missile crisis, 60 years on”.   On Early Warning, Alex Hall talks with Esther Im, program manager at the National Committee on North Korea. She discusses why we’re seeing an increase in North Korea missile tests how likely it is that a nuclear missile test is forthcoming.