Answer:
The main idea of the quote by Catholic Archbishop of New York, Cardinal Francis Spellman, in 1966 is that the conflict in Vietnam is framed as a struggle for civilization against tyranny. Spellman expresses the belief that the war is not one that the United States actively sought but rather one that was forced upon them. He suggests that yielding to tyranny in Vietnam is not an option, indicating a sense of moral obligation or duty to oppose the perceived threat posed by the opposing forces in the conflict. The quote reflects the viewpoint of many American leaders at the time who framed the Vietnam War as a defense of freedom and democracy against the spread of communism.
