Subscribe to The Global POLITICO on iTunes here. | Subscribe via Stitcher.

When President Donald Trump addressed NATO leaders during his debut overseas trip little more than a week ago, he surprised and disappointed European allies who hopedand expectedhe would use his speech to explicitly reaffirm Americas commitment to mutual defense of the alliances members, a one-for-all, all-for-one provision that looks increasingly urgent as Eastern European members worry about the threat from a resurgent Russia on their borders.

Story Continued Below

That part of the Trump visit is known.

Whats not is that the president also disappointedand surprisedhis own top national security officials by failing to include the language reaffirming the so-called Article 5 provision in his speech. National security adviser H.R. McMaster, Defense Secretary James Mattis and Secretary of State Rex Tillerson all supported Trump doing so and had worked in the weeks leading up to the trip to make sure it was included in the speech, according to five sources familiar with the episode. They thought it was, and a White House aide even told The New York Times the day before the line was definitely included.

It was not until the next day, Thursday, May 25, when Trump started talking at an opening ceremony for NATOs new Brussels headquarters, that the presidents national security team realized their boss had made a decision with major consequenceswithout consulting or even informing them in advance of the change.

They had the right speech and it was cleared through McMaster, said a source briefed by National Security Council officials in the immediate aftermath of the NATO meeting. As late as that same morning, it was the right one.

Added a senior White House official, There was a fully coordinated other speech everybody else had worked onand it wasnt the one Trump gave. They didnt know it had been removed, said a third source of the Trump national security officials on hand for the ceremony. It was only upon delivery.

The president appears to have deleted it himself, according to one version making the rounds inside the government, reflecting his personal skepticism about NATO and insistence on lecturing NATO allies about spending more on defense rather than offering reassurances of any sort; another version relayed to others by several White House aides is that Trumps nationalist chief strategist Steve Bannon and policy aide Stephen Miller played a role in the deletion. (According to NSC spokesman Michael Anton, who did not dispute this account, The president attended the summit to show his support for the NATO alliance, including Article 5. His continued effort to secure greater defense commitments from other nations is making our alliance stronger.)

Either way, the episode suggests that what has been portrayedcorrectlyas a major rift within the 70-year-old Atlantic alliance is also a significant moment of rupture inside the Trump administration, with the president withholding crucial information from his top national security officialsand then embarrassing them by forcing them to go out in public with awkward, unconvincing, after-the-fact claims that the speech really did amount to a commitment they knew it did not make.

The frantic, last-minute maneuvering over the speech, Im told, included MM&T, as some now refer to the trio of Mattis, McMaster and Tillerson, lobbying in the days leading up to it to get a copy of the presidents planned remarks and then pushing hard once they obtained the draft to get the Article 5 language in it, only to see it removed again. All of which further confirms a level of White House dysfunction that veterans of both parties Ive talked with in recent months say is beyond anything they can recall.

Susan B. Glassers new weekly podcast takes you backstage in a world disrupted.

By signing up you agree to receive email newsletters or alerts from POLITICO. You can unsubscribe at any time.

And it suggests Trumps impulsive instincts on foreign policy are not necessarily going to be contained by the team of experienced leaders hes hired for Defense, the NSC and State. Were all seeing the fallout from itand all the fallout was anticipated, the White House official told me.

They may be the adults in the room, as the saying going around Washington these past few months had it. But Trumpand the NATO case shows this all too clearlyisnt in the room with them.

***

No one would find this episode more disturbing than Strobe Talbott, the Washington wise man who as much as anyone could be considered an architect of the modern NATO. As Bill Clintons deputy secretary of state, Talbott oversaw the successful push to redefine the alliance for the post-Cold War, expanding to the same countries in Eastern Europe and the Baltics now so urgently looking for American reaffirmation of the commitment Clinton and Talbott gave them in the 1990s.

I spoke with Talbott, the president of the Brookings Institution and a Russia watcher going back to the 1960s when he translated Soviet leader Nikita Khrushchevs memoirs as a Rhodes Scholar classmate of Clintons, for this weeks Global Politico podcast, and he warned at length about the consequences of Trumps seeming disregard for NATO at the same time hes touted his affinity with Russian leader Vladimir Putin. Trumps rebuff of Americas European allies on his recent tripcombined with his decision last week to withdraw from the Paris climate-change agreementis not merely some rhetorical lapse, Talbott argued, but one with real consequences.

The failure to say something has had a very dangerous and damaging effect on the most successful military alliance in history, Talbott told me. Given that all of Trumps top officials like McMaster and Mattis had spent months promising that the president didnt really mean it when he called NATO obsolete and insisting the Article 5 commitment from the U.S. was unshakable, Talbott noted, all we needed was for the commander in chief to say it, and he didnt say itan omission that from that day forward [means] the Atlantic community was less safe, and less together.

Compared with his volatile management style and struggles on domestic policy, some have argued in recent months that Trumps foreign policy is a relative outpost of competence, with strong hands like McMaster and Mattis on board to avoid major failures. But Talbott and others with whom Ive spoken since Trumps trip believe the NATO incident really overturns that assumption. Its destroyed the credibility of Trumps advisers when they offer reassurances for allies to discount the presidents inflammatory rhetoricand cast into doubt the kind of certainties necessary for an uncertain world to function.

I had a very high-placed Asian official from a major ally in Asia not long ago, where youre sitting, who shook his head with sorrow, and said, Washington, D.C. is now the epicenter of instability in the world, Talbott recounted. What it means is something that our friends and allies around the world have taken for granted for 70 years is no longer something that they can take for granted.

And in fact, were already seeing the ripple effects from the Trump NATO speech-that-wasntand what several of the sources told me was an even worse rift with the allies during the private dinner that followed. In the days immediately after, European leaders like Angela Merkel and Emmanuel Macron went public with unusually frank criticisms. Meantime, Trumps rebuffed national security leaders have been left in increasingly awkward positions. Are these people going to steer Trump, one former senior U.S. official asked, or are they simply going to be made enablers?

McMaster, a widely respected three-star general before he took the job, had been presumed by the Trump-wary foreign policy establishment to be a smart pick because of his track record of being unafraid to speak truth to power (and a book on Vietnam in which he specifically argued that LBJs generals had failed by not doing so). But hes now being pilloried by some early supporters for his very public efforts to spin Trumps trip as a successand claim the president supported the Article 5 clause he never explicitly mentioned.

Mattis, meanwhile, has taken a different route.

Not only has the defense secretary, a former top general at NATO, not joined in the administrations spinning, he set Twitter abuzz over the weekend with an appearance at an Asian security forum in Singapore. In his speech, he praised the international institutions and alliances sustained by American leadership, seeking to reassure allies once again that the U.S. was not really pulling back from the world despite Trumps America First rhetoric.

But when asked about Trump moves like withdrawing from the Paris accord and whether they meant America was abandoning the very global order that Mattis was busy touting, the secretary responded with an allusion to Winston Churchills famous quote about the dysfunctions of democracy.

To quote a British observer of us from some years back, bear with us, Mattis told the questioner. Once we have exhausted all possible alternatives, the Americans will do the right thing.

So, he added: we will still be there, and we will be there with you.

The audience chuckled, one attendee told me, because it was an elegant way out of an awkward question.

But the awkward question remains: Should we believe James Mattis, or Donald Trump?

Susan B. Glasser is POLITICOs chief international affairs columnist. Her new podcast, The Global Politico, comes out Mondays. Subscribe here. Follow her on Twitter @sbg1.

More here:

Trump National Security Team Blindsided by NATO Speech ...