U.S. was aware of nukes. They had pictures from the sky of Russia building nuclear missiles in Cuba even though they lied about that.As far as I know US wasn´t even aware of the nukes but could not accept Russian missiles near its territory. Even the potential is enough and Russia feels the same way.
Russia probably could care less about the saftey of Cuba after the bay of pigs failed attempt. Russia just wanted nuclear weapons closer to the U.S. since the U.S. already had nuclear weapons in Italy and places near there.












