NATO 3.0: A Tagline in Search of a Concept

When NATO leaders gather in Ankara this July, they will do so in the shadow of a recent U.S. announcement that will cast a shadow over the discussions: The United States has moved to reduce its contributions to the NATO Force Model, the framework through which the alliance “organises, manages, activates and commands national forces” to support its core activities, by one-third to one-half. The Pentagon framed the cuts not as a strategic adjustment but as a test of allied commitment, or “an opportunity for allies to demonstrate that they have heard President Trump’s call for them to step up and take primary responsibility for Europe’s conventional defense.” That framing captures the central imperative of what the Trump administration has dubbed “NATO 3.0”: burden-sharing, pursued as an end in itself.

Indeed, the administration has successfully identified the same problem that its predecessors did but never resolved: NATO must be reformed for a new era, with the 31 members other than the U.S. taking on a greater share of the burden for Europe’s defense. The administration’s analysis, however, has not led to a positive articulation of what the United States wants the future of European security to look like. Washington has failed to identify a threat that the alliance should organize around, which, in turn, would dictate the nature of each ally’s contributions to defending and deterring against that threat. The administration offers slogans such as “we want partnerships, not dependencies” instead of a coherent strategy.

NATO 3.0 fails not because it asks Europeans to do more, but because it never defines what they are supposed to do more of, or why, and because it has made force posture an instrument of political coercion rather than strategic planning.

Parsing “NATO 3.0”

To understand the administration’s intent under NATO 3.0, we need to go back to what it views as the two previous iterations of the alliance. In the words of NATO 3.0’s chief proponent, Under Secretary of Defense Elbridge Colby, NATO 3.0 is “something much closer to ‘NATO 1.0’ than the approach of the last thirty-five years.” Colby is correct that the United States did not initially intend to anchor NATO indefinitely. Instead, policymakers had hoped that the U.S. would help set up the continent to defend itself and thereby contribute to international security, from which the United States would also benefit.

The administration leans hard on this history. At the June 2026 NATO Defense Ministerial, Hegseth invoked Eisenhower’s 1951 warning that NATO would fail if U.S. troops had not left Europe within a decade. But Eisenhower expressed this view as NATO’s first Supreme Allied Commander, as part of his broader vision of building European self-sufficiency against a named and shared Soviet threat. By invoking Eisenhower’s vision of European primacy while refusing to name the threat it was meant to counter, the administration inverts his logic.

As the end of the Cold War brought about the U.S. global dominance and as the U.S. defense budget ballooned, so did its network of bases, forward-deployed forces and assets, and lines of effort with allies in Europe. The 1990s through the Trump era were what Colby characterizes as “NATO 2.0,” albeit with the administration’s usual laser focus on increasing allies’ defense spending. In a sense, the administration’s diagnosis is not wrong: NATO 2.0 perhaps became unsustainable, because of its overreliance on the United States. That multiple Democratic and Republican administrations alike were frustrated with how little U.S. allies contributed illustrates this fact. The question of NATO’s future would have emerged under any administration. The question is not whether NATO 2.0 needed to be rethought, but how it should be reimagined.

The NATO 3.0 proposal appears designed to advance one tactical goal: increasing burden-sharing. However, the administration’s approach has shortcomings. The most important of these shortcomings resides in the concept’s lack of specificity. Indeed, for all of its rhetoric about reshaping NATO, the administration has not put forward a substantive proposal for how it would reform the alliance. While officials say things like “Europe faces, on its own continent, a real and persistent military challenge,” they time and again fail to say what that threat is—Russia—or concede that the United States faces the same threat.

Although Trump is not the first U.S. president to take issue with lower defense budgets and burden-sharing across Europe, he is the only one to frame his entire approach toward NATO around them. Where predecessors at least framed burden-sharing within a broader vision for the alliance’s future, the Trump administration has instead focused on burden-sharing only as an end, not a means to achieve a stated objective. Without clear objectives for the future of the alliance, Washington cannot expect to sell NATO 3.0 to its allies and to generate the support necessary to truly advance the concept.

The Strategic Void: Burden-Sharing as Ends, Not Means

In a functioning alliance, burden-sharing should take the form of a negotiated distribution of costs and capabilities relative to an agreed threat. NATO allies can argue about who bears what share of the cost of deterring Russia specifically because this is a shared object of their analysis and planning. When Washington dismisses or fails to acknowledge that threat, the burden-sharing conversation becomes incoherent. Allies are no longer negotiating how to split the bill for a common defense. Instead, they are just reacting to U.S. demands for payment for something Washington has already decided it does not value.

In his speech at the Munich Security Conference in February, Colby told the audience: “We will continue to provide the U.S. extended nuclear deterrent. But Europe should feel the preponderance of the forces required to deter and, if necessary, defeat conventional aggression in Europe.” But conventional aggression from whom? What threat is the U.S. nuclear umbrella deterring on the continent?

Russia has demonstrated both the intent and the capability to use military force to redraw European borders, having launched a full-scale invasion of Ukraine in 2022 after years of stoking conflict in Ukraine’s east. The war has killed hundreds of thousands and displaced millions. Moscow has rebuilt its military capacity under wartime conditions, deepened its partnerships with China, Iran, and North Korea, and will continue to reconstitute once the war ends. Russian policymakers have made no secret of their revisionist ambitions toward NATO’s eastern members. Russia’s demonstrated willingness to use large-scale conventional force against a European neighbor is precisely the contingency NATO’s eastern members are preparing for.

The United States has a direct stake in this. A Russia that can successfully coerce NATO’s eastern flank would fundamentally alter the European balance of power—the same balance that U.S. strategy in Europe, and NATO itself, was designed to preserve.

Yet officials and the administration’s own strategy documents refuse to outright characterize Russia as the threat. The National Defense Strategy (NDS) gestures at an answer without committing to one, calling Russia “a persistent but manageable threat to NATO’s eastern members for the foreseeable future.” In effect, the administration names Russia as the “threat” in order to dismiss it. The strategy continues, “European NATO dwarfs Russia in economic scale, population, and, thus, latent military power,” so Europe therefore must take “primary responsibility for [its] conventional defense, with critical but more limited U.S. support.” The NDS’s Russia section is also notable for its omissions: This section does not mention Article V, collective defense, or extended deterrence, all central to NATO’s existence. In essence, this section of the NDS exists to justify why Europe should handle Russia so the United States does not have to, rather than articulating what deterrence of Russia requires or how NATO should be structured to provide it.

The ordering of the NDS’s burden-sharing argument is itself revealing. The document contends that U.S. “allies and partners must shoulder their fair share of the burden of our collective defense.” They must do so because it “is the right thing for them to do, especially after decades of the United States subsidizing their defense. But it is also vital from a strategic perspective—both for us and for them.” The first priority addresses what the administration considers a political wrong, and only then will strategic concerns be taken into account.

Without a defined threat, there is no basis for determining what adequate burden-sharing actually requires. The standard becomes whatever Washington decides on a given day, which now seemingly changes by social media post and does not constitute a strategic framework but a coercive one.

Force Posture as a Political Instrument

NATO 3.0’s incoherence has consequences. In the Trump administration, force posture is not downstream of a coherent strategy. Rather, it is downstream of politics. By refusing to identify the threat it wants NATO to deter, the administration has turned force posture decisions into political instruments. Recent U.S. troop deployment decisions in Europe demonstrate the consequences of this approach.

After German Chancellor Friedrich Merz said that the United States was being “humiliated” in negotiations to end its war against Iran, Trump retaliated by announcing the United States would withdraw 5,000 of its troops from Germany. The Pentagon offered a different explanation: “This decision follows a thorough review of the Department’s force posture in Europe and is in recognition of theater requirements and conditions on the ground.” Contemporary reporting suggests that the decision actually caught much of the U.S. defense establishment by surprise. Trump also threatened withdrawals from Spain and Italy for their lack of support in the Middle East. That these demands directly contradict the NDS’s priority for European allies to focus “their efforts and resources … on Europe” demonstrates the administration’s inability to stick to its own stated strategy.

That same logic suggests model allies should be rewarded, not punished. Such an approach would also reflect the NDS’s broader treatment of allies, which says that the administration will “prioritize cooperation and engagements with model allies—those who are spending as they need to and visibly doing more against threats in their regions, with critical but limited U.S. support.”

By the administration’s definition, there is likely no greater “model ally” in NATO than Poland. Warsaw increased defense spending to 4.5 percent of gross domestic product in 2025 and has increased spending further in 2026. The Polish General Staff is seeking to build a 500,000-strong military, including 300,000 active-duty troops and 200,000 reservists by 2039. To bolster the continent’s conventional defense, Warsaw built the alliance’s second-largest site for pre-positioned equipment, munitions, and other materiel and is investing in significant fortifications along its borders with Russia and Belarus. Poland also continues to modernize its armed forces, including via billions of dollars of commitments to buy U.S. military equipment.

Yet, in May, Secretary of Defense Pete Hegseth decided to halt an already underway deployment of the 2nd Armored Brigade Combat Team, 1st Cavalry Division. Despite the Pentagon stating that the decision came in response to NATO allies’ failure to help “when America needed them,” Pentagon civilians had informed Army leadership only days before. Trump then reportedly called Hegseth to ask why he canceled the deployment, telling him that the United States should not “treat Poland poorly.” The president then announced on Truth Social that 5,000 troops would actually be deployed to Poland, explicitly basing his decision on the election of Polish President Karol Nawrocki, a candidate he endorsed, and “our relationship with him.” Afterward, U.S. defense officials remained bewildered: “We just spent the better part of two weeks reacting to the first announcement. We don’t know what this means either.”

Whereas the decision to withdraw U.S. troops from Germany had at least the structure of punishment logic for Merz’s criticism of Trump, the public record of the Poland case is stranger. Hegseth canceled a deployment already underway on Iran-solidarity grounds, but then Trump reversed that decision on personal-political grounds. Neither decision, however, engages the strategic question of what posture NATO’s eastern flank requires.

According to Department of Defense Instruction 3000.12, U.S. force posture abroad is “the fundamental enabler of U.S. defense activities and military operations overseas and is also central to defining and communicating U.S. strategic interests to allies, partners, and adversaries.” Forward-deployed forces can be a useful tool for achieving a state’s foreign policy goals. They can demonstrate seriousness of commitment because of the costs associated with deployments, act as “tripwires” that promise intervention if an adversary attacks, or shift the local military balance enough to deter an adversary’s intervention in the first place. All three benefits depend on predictability and credibility to function. When force posture becomes a reward for personal relationships and a punishment for foreign policy disagreements, it stops communicating strategic intent, leaving allies unable to rely on it and adversaries free to ignore it.

Why NATO 3.0 Cannot Discipline Its Own Administration

The administration cannot use NATO 3.0 as a framework for its behavior because it is a tagline, not a concept: It has no answer to what the alliance is collectively deterring, no theory of what the U.S. commitment looks like after burden-sharing is achieved, and no criteria for what adequate burden-sharing even requires beyond some general points. Colby’s framing is actually the most coherent version of the administration’s argument: Europe bears responsibility for conventional deterrence on the continent, while the U.S. provides a nuclear backstop and shifts its focus to other theaters. But as it currently stands, NATO 3.0 does not provide a vision for what that might look like in practice, how it may be implemented and on what timelines, and how the alliance may address its potential trade-offs and drawbacks. Moreover, the problem is that posture decisions made at the top are not consistent even with NATO 3.0’s thin logic. Each whim-driven policy reversal deepens allied uncertainty about whether any U.S. commitment reflects a policy process at all.

On June 3, the NATO Force Model cuts became formal policy: U.S. European Command announced that the United States would “rightsize its contributions,” explicitly tying the move to the NDS’s burden-sharing imperative and the NATO 3.0 concept. This announcement might appear to give the concept operational content, but specificity about quantity is not a substitute for clarity of purpose. The announcement framed the cuts entirely as burden-shifting pressure, stating that Europe must take primary responsibility for its conventional defense “in response to the security threats it faces.” Which threats, the formal public announcement of NATO 3.0’s signature posture change still declines to say. Even the specifics lack specificity: Allied officials learned the United States would reduce the number of aerial refueling aircraft from 79 to 63 and F-16 and F-15E jets from 153 to 99, but as one European official put it, “We still don’t know if [these reductions] will happen in two, three or five years.”

At the June 2026 NATO Defense Ministerial meeting, Hegseth announced that “[g]oing forward, our annual NATO dues will be contingent on other countries meeting their defense spending targets,” and he expanded on the planned “NATO 3.0 review” of U.S. force posture and basing in Europe. He described the review as one that some allies “will fail, and others will pass with flying colors,” designed to keep a “close eye on allies” who do not meet their targets, or “who say no, or maybe, or wait and see when it matters most.” In short, his speech formally specified coercion as the main tool of this new approach.

The contrast with Trump’s first term is stark. When that administration conducted a U.S. European Command force posture review in 2020, the first of its five stated “core principles” was to “Enhance deterrence of Russia.” The 2026 review apparently includes no such organizing principle. Same department, same military command, two Trump administrations, yet the organizing threat that anchored a similar posture review six years ago has disappeared.

Meanwhile, the administration’s own party has sought to legislate against its whims. The 2026 National Defense Authorization Act bars the Pentagon from reducing U.S. posture in Europe below 76,000 troops absent a stringent certification process, and the Republican chairmen of both the Senate and House armed services committees warned that premature reductions risk “undermining deterrence and sending the wrong signal to Vladimir Putin.” Their concern predates the Iran fallout entirely: The same two chairmen objected in October 2025 when the Pentagon abruptly decided not to backfill the U.S. Army 101st Airborne Division’s 2nd Brigade in Romania, criticizing a posture review process they said “appears uncoordinated and directly at odds with the President’s strategy.” Notably, the GOP committee chairs name the adversary that the administration’s strategy documents do not.

Those same documents frame burden-sharing as an organizing principle but provide no mechanism for making posture decisions consistent with it. Individual political judgments, like Trump’s anger at Merz or his endorsement of Nawrocki, substitute for strategic planning. As a result, U.S. officials are asking NATO allies to fill a gap determined not by threat-based analysis but, rather, by U.S. domestic political whims.

What a Coherent Reform Would Require

Implementing NATO 3.0 in any meaningful sense requires the administration to name the threat that the alliance exists to deter. The administration’s six-month NATO 3.0 review is the tool for doing exactly this, but the review as described will not do this work because it is structured around the wrong question. Hegseth framed it as an audit of allied compliance, or which countries “pass” and which “fail” on spending and access, rather than an assessment of what deterring Russia on the eastern flank actually requires. A posture review organized around loyalty produces a loyalty ranking, not a strategy or assessment of gaps in capabilities needed to carry that strategy forward.

Instead, the review should start with a shared assessment of Russia. From there, posture requirements follow, allies’ burden distribution can be negotiated relative to those requirements, and the residual U.S. commitment of a nuclear backstop with “critical but limited” conventional capabilities can be specified coherently. Force posture decisions should then be insulated from bilateral political disputes. In short, U.S. troop presence should be neither a reward nor a punishment.

Ahead of the NATO summit in Ankara in July, the cost of the administration’s continued incoherence is concrete. European allies are already planning for a future that is increasingly their own, pulling in Canada and building commitments and institutions that hedge against U.S. unreliability. That future may superficially resemble NATO 3.0’s stated ethos of European conventional primacy, but the NATO in this scenario will be one that Washington finds itself largely reacting to rather than shaping based on its own interests.

The administration is right that NATO requires reform, but diagnosing a problem is not a strategy. The Germany and Poland cases, like Romania before them, are not noise; they are signals. They reveal that force posture in this administration is downstream of politics—not a coherent strategy. That has consequences for deterrence that cannot be papered over with a tagline like NATO 3.0. That tagline is not a concept. Until the administration can answer what NATO is for, it cannot tell allies or adversaries alike what NATO 3.0 means.