Final answer:
The official American policy during the Eisenhower administration for a Soviet attack on Western Europe was a strategy of massive retaliation, which involved the use of nuclear weapons and brinkmanship to maintain peace.
Step-by-step explanation:
During the Eisenhower administration, the official American policy for a Soviet attack on Western Europe was characterized by a strategy of brinkmanship and the doctrine of massive retaliation. The administration's foreign policy was to maintain peace through a strong stance that emphasized the readiness to use nuclear weapons if pushed too far, a strategy that could potentially bring both sides to the brink of war. This policy was embodied in the term "massive retaliation," which promised a devastating nuclear response to any first Soviet strike, thereby adhering to the concept of Mutually Assured Destruction (MAD). Additionally, this era also saw the introduction of the Eisenhower Doctrine, which pledged economic and military aid to countries resisting attacks by nations controlled by international Communism, though this was more directly related to the Middle East in response to the Suez crisis.