Question

Why is diplomacy a key part of U.S. foreign policy?

I can't figure this out.
Ms. Sue
What does diplomacy mean?

http://www.dictionary.com/
X
the conduct by government officials of negotiations and other relations between nations.
Ms. Sue
So, what is your answer to the question?

Is diplomacy better than war?
X
Yes it is. Thank you Ms.Sue
Ms. Sue
You're welcome, X.