United States Shifts NATO Commitments, Urging Europe and Canada to Augment Conventional Defense
The United States has informed its North Atlantic Treaty Organization (NATO) allies of its decision to commit fewer guaranteed forces to the alliance’s force model, simultaneously calling upon European member states and Canada to bolster their contributions to compensate for this adjustment. A senior NATO official, speaking at a background briefing, maintained that this recalibration can be managed without creating a substantial void in the alliance’s defensive posture.
The NATO force model, as defined by the official, represents a critical framework outlining the specific forces that the Supreme Allied Commander Europe (SACEUR) can rely on with assured availability and appropriate readiness levels. These forces are designated to respond to a range of missions, activities, operations, and contingencies, including the alliance’s core defence plans. The official explained that Washington’s move aligns with its long-standing signals, indicating an expectation for European allies to assume a “more prominent role in Europe’s conventional defense.” This strategic shift, the official elaborated, is primarily driven by the escalating risk of simultaneous conflicts emerging across various global theatres.
In response to the US withdrawal of certain commitments, Washington has extended an invitation to European allies and Canada to step forward and replace these forces. This process, according to the official, is already in motion, with SACEUR actively engaged in detailed discussions with allied nations. The objective of these ongoing consultations is to meticulously ensure that the adjustments do not, in the official’s words, “undermine the credibility of the alliance’s plans, activities and missions.”
The official offered a detailed explanation as to why this reduction need not lead to a perilous gap in NATO’s capabilities. A significant portion of European military capacity, it was revealed, has historically not been formally declared to the alliance’s force model. Nations often retain assets, such as advanced fighter aircraft like the F-35, for national tasks or maintain them at lower states of readiness. This reality was confirmed through the fifth step of NATO’s defence planning process, which involves expert assessments of allies’ actual inventories. Therefore, filling a “slot” previously occupied by US forces could, in a striking phrase used by the official, be as simple as “a phone call” from one capital offering an existing capability to substitute for what the United States had been providing. This substitution could be “like for like,” involving the same system, or with a different system capable of delivering the same strategic effect.
While acknowledging that “not everything can be absolutely replaced,” the official underscored that the limited number of capabilities uniquely provided by the United States would not, in this assessment, create an insurmountable challenge when weighed against the vast array of substitutable assets. This positive outcome, however, hinges critically on allies making the necessary political and military decisions to commit these undeclared forces.
The official further elaborated on the reasons behind the initial reluctance of some nations to declare all their capabilities. While some countries are “completely all in,” with their entire defence policy built around their NATO contributions, others, such as France, the United Kingdom, and Canada, reserve forces for commitments abroad or for national contingencies. Despite these national reservations, the official argued that such forces would, in all likelihood, be made immediately available to SACEUR in a collective defence scenario. To withhold critical military assets during an invasion, for instance, would be “meaningless” and fundamentally contrary to the spirit of collective defence enshrined within the alliance.
Moreover, the official emphasized the inherent flexibility within the force model itself. Different levels of commitment mean that pledging forces does not necessarily require personnel to be “in the seat 24/7.” The official contended that it is preferable to have genuine assurance of forces being available when a crisis erupts, rather than sustaining “a fiction about the assurance of US forces being available when we know they’re not.” Ultimately, the executability of defence plans and the associated level of risk are considered military judgments falling under the purview of SACEUR.
When pressed on the specific capabilities that the United States uniquely brings to the alliance, the official candidly acknowledged areas such as command and control (C2), intelligence, surveillance, and reconnaissance (ISR), deep precision strike, and air-to-air refuelling. These capabilities were described as “critical for military superiority,” and the official asserted that European allies and Canada must become “a lot more faster” at developing them. This imperative, it was noted, is not solely a consequence of the American decision but stems from pre-existing agreements among allies to enhance these areas, a process currently constrained by production capacity limitations and the need for greater industrial cooperation.
The official was careful to distinguish the force model from the broader capability targets set for the alliance. Allies are tasked with providing the forces necessary to execute plans in a protracted war against a fully reconstituted Russia, representing the maximum level of effort. The force model, in contrast, is a subset of these broader requirements, specifically focusing on forces of assured availability and readiness to respond during the critical initial days and weeks of a crisis. The official concluded that, even with the American reductions, there would be no significant gap in the force model beyond a very few capabilities, provided that allies commit to filling the identified needs.
Finally, the official indicated that the capability targets themselves are slated for a comprehensive rework. While allies agreed upon their current capability targets last year and have a clear understanding of how each plans to meet them, NATO is embarking on a fresh cycle of defence planning. This new cycle will involve a revision of existing plans and the force requirements that flow from them. Intensive political discussions are anticipated in the autumn of 2026 to establish the parameters for this new cycle, leading to the generation of a fresh set of capability targets for all allies, including the United Kingdom, in the subsequent spring.
Why This Matters
This strategic adjustment by the United States within NATO’s force model carries significant implications for the future of transatlantic security, burden-sharing, and European defence autonomy. Firstly, it represents a tangible shift in the long-standing dynamic of US military leadership within the alliance, compelling European and Canadian allies to assume greater responsibility for their collective conventional defence. This move, while framed by NATO as manageable, places increased pressure on European capitals to invest further in their militaries, enhance readiness, and overcome existing production and industrial cooperation challenges, particularly in critical areas like C2, ISR, and deep strike capabilities.
Secondly, the US decision, linked to the risk of simultaneous global conflicts, underscores a broader strategic recalibration in Washington, signaling a potential need to retain greater flexibility for deployments in other regions, notably the Indo-Pacific. This could mean fewer readily available US forces for European contingencies than previously assumed, even if the overall commitment to Article 5 (collective defence) remains unwavering. The success of this transition hinges on the political will and military capacity of European nations to not only pledge existing, undeclared assets but also to accelerate the development of advanced capabilities that the US has historically provided.
Finally, the ongoing revision of NATO’s defence plans and capability targets highlights a proactive effort by the alliance to adapt to a rapidly evolving geopolitical landscape, particularly in the context of a “fully reconstituted Russia.” This provides a crucial opportunity for allies to collectively reassess threats, define realistic force requirements, and solidify a more equitable and resilient burden-sharing model. The outcome of these discussions and the subsequent commitments by member states will determine NATO’s credibility and effectiveness in deterring aggression and maintaining stability in the coming decades, reinforcing the principle that collective security requires genuine, shared responsibility from all members.