"It shall be the policy of this Nation to regard any nuclear missile launched from Cuba against any nation in the Western Hemisphere as an attack by the Soviet Union on the United States, requiring a full retaliatory response upon the Soviet Union." —U.S. president John Kennedy, Address on The Cuban Crisis—October 22, 1962 What policy is reflected in President Kennedy's phrase "a full retaliatory response"?

A)brinkmanship

B) containment

C) isolationism

D) nonproliferation