The least diplomatic president in US history is scoring diplomatic victories.

Over the last couple of days, Donald Trump has gotten NATO to agree to a defense spending target of 5%, and backed Canada off imposing a digital-services tax on American tech firms.

He’s done this while being loathed by many of his foreign interlocutors.

In fact, Trump has executed a near-complete inversion of the typical diplomatic formula.

He’s not nice. He’s not conflict-averse. He’s not euphemistic.

And yet he’s gotten results.

The NATO commitment, in particular, is potentially historic, and could materially strengthen the position of the Western alliance for the long term.

Trump is violating the usual rules of persuasion. Abraham Lincoln famously said: “It is an old and true maxim that ‘a drop of honey catches more flies than a gallon of gall.’ ”

Trump doesn’t hesitate to pour on the gall, often in........

© New York Post