What happened on 27th October 1961
Soviet tanks pulled up to Checkpoint Charlie and refused to allow any further access to the East
All day US and Soviet tanks fully armed faced each other in a tense standoff
After 18 hours, 1 by 1, 5m at a time tanks pulled back - another crisis avoided
International reaction was relief - Khrushchev ordered Ulbricht to avoid any actions that would increase tension - JFK said 'it's not a very nice solution, but a wall is a hell of a lot better than a war'