What did the united states threaten in order to prompt peace or retreat as part of the "new look" foreign policy?

The correct answer for:  

What did the United States threaten in order to prompt peace or retreat as part of the "New Look" foreign policy?

Is:

Nuclear weapons.

Explanation:

New look was a foreign policy in the time of former U.S. President Eisenhower which looked to balance the nuclear power in the cold war by using public money to provide that balance that he looked to ensure the U.S. safety and prevent certain out breaches of danger to the U.S. It was aimed to counter the power of the Soviet Union and to establish also geopolitical forces as well as nuclear weapons to provide the safety the U.S. required to avoid an unfortunate situation.