He's so forgetful he probably forgets who's in what country. No doubt he probably congratulated Macron on his country voting for Brexit, asked May how things been since the Berlin wall came down, and thinks Merkel is in charge of Poland or something.
He simply couldn't give a shit. In his world only he exists and he occasionally remembers his country does too. That's why I can really believe he sold out to the Russians. He would sell his own kids if the price was right. No morals, no ethics and no fecks given.