Your the one who seems to thing a polite message was offensive somehow.
Not what I've said. I've said it portrays a petulant attitude and is rude.
You've never heard of black propaganda (hint: it's not a racial thing) or misinformation have you?
Once again, not propaganda. Unless you want to claim Trump is an anti-Trump propagandist. Again (emphasis mine):
"Denmark is a very special country with incredible people, but
based on Prime Minister Mette Frederiksen’s comments, that she would have no interest in discussing the purchase of Greenland, I will be postponing our meeting scheduled in two weeks for another time,"
Meh anyone can cancel at anytime for any reason.
But the reason given in this case is that Denmark refused to sell Greenland to America, as stated by Trump above.
No, it isn't. Equating the logic used to defend one even to the same logic being used to defend a different event, thus demonstrating the fallacy inherent in the logic, is not the same as comparing one event to another event wholesale.
To use an analogy (which I am loathe to do, considering that they seem to confuse you a lot):
EVENT: A politician sends an unsolicited picture of themselves naked to a teenager.
LOGIC USED IN DEFENSE: "What is wrong with sending an email?"
EVENT ANALOGY: A teenager goes to a school with dozens of guns and shoots several students.
LOGIC USED IN ANALOGY DEFENSE: "What is wrong with going to school?"
See? It's how you demonstrate the fallaciousness (fallicicity?) of a particular argument - by showing that the same argument can be applied to the defense of an obviously indefensible proposition.
Note the second paragraph:
If I put a gun to your head and said "Would you kindly hand me your wallet, if you don't mind?", is it not a robbery?
Point is, judge someone by their actions - not their diplomatic use of language. In this instance, Trump is essentially postponing a diplomatic visit in response to not getting what he wants. The fact that he wrote a verbose Tweet about it doesn't change that action into something non-petulant.