Article continues below advertisementDonald Trump went on a wild overnight posting spree that saw him leak private messages, attack his political enemies and criticize U.S. allies.While en route to Davos, Switzerland, for the World Economic Forum on Tuesday, January 20, the 79-year-old president shared text messages from French President Emmanuel Macron and NATO chief Mark Rutte, the latter of whom he apparently had a "very good" phone call with regarding his efforts to acquire Greenland. "As I expressed to everyone, very plainly, Greenland is imperative for National and World Security.