"We are totally in line on Syria. We can do great things on Iran," the French leader wrote in English.
Then, he added: "I do not understand what you are doing on Greenland," immediately followed by: "Let us try to build great things."
That was the only mention that Macron made of the semi-autonomous Danish territory in the two sections of message that Trump published. It wasn't immediately clear from Trump's post when he received the message.
World leaders' private messages to each other rarely make it verbatim into the public domain - enabling them to project one face publicly and another to each other.
But Trump - as is his wont across multiple domains - is casting traditions and diplomatic niceties to the wind and, in the process, lifting back the curtain on goings-on that usually aren't seen.