“I’m not going to own it,” President Trump said about the Affordable Care Act that he and Republicans, following years of bombastic promises, have thus far failed to either repeal or replace. “Let Obamacare fail.”

That declaration provoked an angry editorial response from The Post, which asked: “Has there ever been a more cynical abdication of presidential responsibility?”

To which the answer is: Of course. Trump has performed that cut-and-run act before.

Let’s return to the death of U.S. SEAL Senior Chief Petty Officer William “Ryan” Owens, the first U.S. service member killed in the line of duty under the Trump administration.

Trump was asked by Fox News about the abortive covert mission in Yemen in January that left Owens and about 30 Yemeni civilians dead, including women and children.

Trump said the operation was something military leaders “were looking at for a long time”; it was “something that was, you know, just — they wanted to do. And they came to see me and they explained what they wanted to do, the generals, who are very respected.”

And with that, the commander in chief shifted the blame: “And they lost Ryan.”

Trump washed his hands of the whole thing.

This week, he resorted to that same Pontius Pilate routine following the GOP’s failed attempt to destroy Obamacare.

Trump has a penchant for desertion on the field of battle when something goes wrong.

That trait was ably captured by The Post’s James Hohman in his July 19 Daily 202 report, which documented how Trump talks about “the Republicans” involved in the health-care debacle as if he’s not one of them, let alone leader of the party.

Trump’s constant references to “the Republicans” are reminiscent of his third-person reference to “the generals” and the death of Owens.

But also recall Trump casting blame on Justice Department lawyers when the Muslim ban, drafted in his White House, got shot down in the courts. Remember Trump stoking anger at rallies with incendiary language and then playing the innocent victim who was not responsible for his fired-up supporters beating on bystanders?

Bottom line: Not a strand of President Harry S. Truman’s famous dictum, “The Buck Stops Here,” can be found in Trump.

Personal responsibility is strange fruit to him. And it is a character failing that should haunt members of Congress, regardless of party, and the country. A leader without honor and credibility is a leader not worth having.

Because it’s pretty clear by now, if there were ever any doubt, that Trump holds true to nothing but himself. Take credit, deflect blame is his modus operandi.

Hence, he believes he’s in the middle of an ongoing investigation into Russian interference in the 2016 campaign because his attorney general, Jeff Sessions, recused himself from the probe.

Hence, his family business empire is being examined (with a Trump-imposed red line potentially crossed) not because of troubling Trump-Russia connections but because of a witch-hunting, out-of control special counsel, Robert S. Mueller III.

Hence, Trump was told about claims that the Kremlin had compromising information about him only because then-FBI Director James B. Comey, who briefed him on the allegations, wanted to hold it over his head.

Thus, Trump fired Comey. Thus, Trump says he wouldn’t have appointed Sessions had he known Sessions would step aside.

Thus, Mueller? The Trump team is now exploring ways to limit or undercut Mueller’s probe, according to The Post.

Because we are talking about Donald Trump, the innocent victim who never brings problems upon himself, who won’t take responsibility for his mistakes, who in a heartbeat assigns fault to any and all people under his span of control.

So wanting in leadership, so deficient in the style, skills and character required in a president of the United States.

And he’s as mean as can be.

Exactly two years ago, Trump vilely declared that Sen. John McCain (R-Ariz.) is “not a war hero,” adding, “He’s a war hero because he was captured. I like people that weren’t captured.” I wrote in July 2015: “McCain not only served this country honorably, but also paid a price at the hands of his North Vietnamese captors that brings tears to the eyes. That a decorated Vietnam War veteran would be sarcastically put down by a loudmouth celebrity presidential wannabe who never wore the uniform, but escaped military service with a series of draft deferments, is one of the most disgusting turns of events in national politics.

“I voluntarily wore the uniform of a commissioned U.S. Army officer, and proudly. Not that it matters to Trump, but I would not go into the same room with him.”

I still feel that way today.

We, the American electorate, have put on the world stage a narcissistic showoff who craves applause but will abdicate and pass the buck in a heartbeat.

Just ask Capitol Hill. Just ask the commanders.

Just watch Trump for yourself. And cringe.

Read more from Colbert King’s archive.