D. They wanted to ensure that the other could not attack and destroy them
<span>Who is the son of the actress who played the mother-in-law of the “Sex and the City” character who graduated Harvard?</span>
The U.S. reluctance to send Americans to fight in foreign countries for fear of getting the U.S. involved in another Vietnam is called "D<span>. the Vietnam syndrome," since the Vietnam War was viewed by many as being a foreign policy disaster. </span>