In the concluding episode of our series on the Cuban Missile Crisis, we trace how a tentative compromise coincided with the most dangerous moments of the stand-off, in an exchange of letters that threatened disaster. Elinor Evans speaks to expert historians Alex von Tunzelmann, Mark White and William Taubman to find out how the crisis reached a resolution, and the diplomatic fall-out from the 13 days. Plus, we track revelations that have come to light in the 60 years since the world was brought to the edge of a nuclear war.
