For starters. here is a partial exchange of messages sent between John F Kennedy and Nikita Krushchev during the height of the Cold War. When people of each nations saw the other as the most terrible enemy and the world seemed always on the verge of nuclear war.
“…In your speech of inauguration to the office of President, and likewise in the message to Congress of January 30 you, Mr. President, said that you would like for the Soviet Union and the United States of America to unite their efforts in such areas as the struggle against disease, mastering the cosmos, development of culture and trade. Such an approach to these problems impresses us and we welcome these utterances of yours.
We consider that favorable conditions for the most speedy solution of these noble tasks facing humanity would be created through the settlement of the problem of disarmament. And we would like every country to make every effort for the solution of this problem with the establishment of such a strict international control under which no one could arm secretly and commit aggression.
All agree to the fact that the solution of the problem of disarmament depends to a great extent on agreement between the Soviet Union and the United States of America. If we reached such an agreement, it would be a great joy for all people on Earth and a great blessing for all mankind.
“…I think we should recognize, in honesty to each other, that there are problems on which we may not be able to agree. However, I believe that while recognizing that we do not and, in all probability will not, share a common view on all of these problems, I do believe that the manner in which we approach them and, in particular, the manner in which our disagreements are handled, can be of great importance.
In addition, I believe we should make more use of diplomatic channels for quite informal discussion of these questions, not in the sense of negotiations (since I am sure that we both recognize the interests of other countries are deeply involved in these issues), but rather as a mechanism of communication which should, insofar as is possible, help to eliminate misunderstanding and unnecessary divergencies, however great the basic differences may be….”
John F Kennedy
Fast forward to 2017. Here is are the words used in the exchanges between Kim Jung-un and Donald Trump.
Trump: If you don’t do what I tell you I am going to “totally destroy” your country. Totally!
Kim: Ha . “A frightened dog barks the loudest”. I am not worried.
Trump: Oh yeah, “Rocket Man”
Kim: You are obviously “mentally deranged.”
Trump: Well, you are a “total nutjob”.
Kim: Well, I have the “biggest ever hydrogen bomb”. Biggest! Best !
Trump: You are “obviously a madman” I will destroy you.
Kim: I hear a “dog barking” just a “dog barking”.
Trump: Your mother wears combat boots!
Kim: So’s your old man.
Trump: Gonna make me?
Kim: You stink!
John F Kennedy and Nikita Krushchev must be swirling like tops in their graves.
(Words in quotes were actually used by Trump and Kim or Kim’s representatives.)