BERLIN—Perhaps the biggest surprise of President Donald Trump’s wrecking-ball trip to Europe and its chaotic aftermath is that we are surprised at all.

The Trump we’ve watched over the past week—from his cynical lies and gratuitous insults, to his preening and contradictions, and of course, the ugly spectacle of his unconditional respect for and abiding trust in Russian President Vladimir Putin—is nothing new. Many predicted the trip would be a train wreck for trans-Atlantic relations, and it was.