Donald Trump’s feel-good campaign has hit a few walls along the way.

He’s gone to Quebec to take part in the G-7 summit of the world’s leading economic powers and has managed to tick off all of our allies. These are the real friends with whom this country formerly enjoyed a long-standing relationship through thick and thin, good times and bad, war and peace.

Yep, he’s now imposing steep trade tariffs, which might precipitate a trade war with, say, Canada and the European Union. China is there, too. Our relationship with the People’s Republic of China has been up and down since the communists took control in 1949, but at the moment it’s supposed to be in good shape — except that we might launch a trade war with them, too.

And, yes, we once fought a war with Japan and Germany. But since that terrible time, they have stood shoulder to shoulder with us.

He has said he might tear up the North American Free Trade Agreement, even though Mexico — the third nation involved with NAFTA — isn’t represented at the G-7.

In the midst of all this, Trump is trying to make nice with Russia, as if he hasn’t made his preferences known already about Vladimir Putin’s government already around the world.

He wants Russia to come back into the circle of nations that used to be known as the G-8. That was until the organization booted the Russians out because they invaded Crimea and backed pro-Moscow forces rebelling against the government in Ukraine.

And while Trump excoriates Canada for posing a “national security threat” to the United States because of trade practices, he ignores the real threat that Russia has demonstrated by interfering in our 2016 election. Moreover, the Russians likely are going to do it again in 2018.

This is how you earn “respect” around the world, Mr. President?

No. It isn’t. It’s how you make a mockery of the role you assumed when you took the oath of office as president of the United States.

They aren’t respecting us in these world capitals. So help me, they are mocking us.