Moreover, the Congress adopted a resolution expressing its support of this declared policy. Despite this, the rapid development of long-range missile bases and other offensive weapons systems in Cuba has proceeded. I must tell you that the United States is determined that this threat to the security of this hemisphere be removed. At the same time, I wish to point out that the action we are taking is the minimum necessary to remove the threat to the security of the nations of this hemisphere. The fact of this minimum response should not be taken as a basis, however, for any misjudgment on your part.

First letter to Nikita Khrushchev, 22 October 1962