This man is Vasili Arkhipov.
During the Cuba Crisis, when western civilisation was, without realisation, on the verge of total annahilation, this man was one of the three officers on board of a Soviet Submarine that carried a nuclear warhead.
Their submarine was surrounded by twelve American warships, which were trying to force the submarine to surface. Little did they know about the dangerous weapon this submarine carried.
The three officers, being attacked with depth charges, were assigned to launch their weapon as soon as the war started. In order to launch, they had to agree unanimously on it.
This barely known hero prevented this, and chose to surface instead.
If he did agree, they would have started a nuclear war.
I propose that we make his birthday, Januari 30th, an international holiday.
PS, my scanner won't scan this, so I made a picture instead