Which of the following statements reflects the doctrine of pre-emption?
a. Because the Cold War is now over, the United States no longer needs to worry about military threats to its security.
b. The United States will build up its defences so much that no other country would dare to attack us.
c. The United States will attack hostile nations that threaten us before they have a chance to attack the United States.
d. The United States will work with its allies to ensure it has support in the event of war.