Just exactly what he would expect a megalomaniac with the maturity of a twelve year old boy to tweet.
Happy New Year to all, including to my many enemies and those who have fought me and lost so badly they just don't know what to do. Love!— Donald J. Trump (@realDonaldTrump) December 31, 2016
I think I have coined a new term for how Trump interacts with people, "Dickplomacy."
It is kind of like "diplomacy" except that there is none of that, and instead Trump just acts like a dick.