NATO rehearses the day the United States says "fend for yourselves"

The new national commitments of the European allies in the distribution of responsibilities within NATO are not being processed as a single treaty to be ratified, but as national packages of spending, capabilities, and contributions to high-readiness forces. At the allied level, the Madrid 2022, Vilnius 2023, and especially The Hague 2025 summits have consolidated 2 % of GDP as a spending floor and have opened the political debate towards 5 % by 2035, but their implementation depends on each parliament. In general, most European countries have already politically assumed the 2 % and are at different stages of budget execution, military programming laws, and capability plans. Therefore, there is no unitary “European ratification,” but rather a mosaic of ongoing national decisions.

General NATO and EU Framework

At the NATO level, commitments have been mainly set through summit declarations, which establish 2 % of GDP as a minimum reference and, according to the Alliance's monitoring, all European allies would reach that threshold by 2025, with a strong increase in defense spending in Europe and Canada (DSN). The Hague 2025 summit would have raised the political ambition towards spending around 5 % by 2035, which implies, de facto, that each government must reconfigure its budgets and defense plans for the next decade (CEOExEuropa).

In the EU, the focus is not a new NATO distribution treaty, but the coordination of capabilities and industry through instruments such as PESCO, CARD, the European Defence Fund, or new financing schemes like EDIP and SAFE, aimed at joint purchases and industrial strengthening (CESEDEN – NATO‑EU Defence 2026). An example is the SAFE loan of 43.7 billion euros to Poland to modernize its defense, which is part of this European rearmament effort (El Demócrata – SAFE loan to Poland).

Spain: from NATO decision to internal execution

Spain is one of the cases where the commitments have been most concretely advanced. According to the Government, by 2025 the 2 % of GDP in defense has been reached, five years ahead of the initial 2029 horizon, and it is argued that around 2.1 % is “sufficient and compatible” with the Spanish model (DSN; intervention on The Hague 2025). From a strictly budgetary point of view, Spain still ranks at the bottom in terms of percentage of GDP in 2024 data (1.24 % according to NATO, 1.43 % if additional items are included), hence the leap to 2025 requires an extraordinary effort partly financed with European funds expiring in 2026 (ElDiario.es).

In parliamentary sessions, the Minister of Defense has defended in the Congress Defense Committee the strong budget increase (25.8 % in 2023, with 60.91 % dedicated to productive investment) and has presented the Industrial and Technological Plan for Security and Defense, endowed with 10.471 billion euros, as a key instrument to translate NATO commitments into internal industrial and operational capabilities. All this is processed through the General State Budgets and multi-year plans, without a specific new treaty requiring singular ratification.

In terms of capabilities, Spain already provides command structures and high-readiness forces recognized by NATO, such as the CGTAD in Bétera, the maritime high-readiness component in Rota, and sustained contributions to missile defense and air policing missions in the East (CESEDEN). The internal political debate now focuses on two issues: how to maintain the spending level beyond 2026 and to what extent the effort is compatible with social priorities.

Main European allies

Among the reference partners, data collected by El Demócrata and official bodies show that Germany has raised its spending to around 2.3 % of GDP in 2025, channeled through the federal defense budget and a special fund to modernize the Bundeswehr. The processing is basically budgetary, with Bundestag control, and linked to joint NATO‑EU planning.

France stands around 2 % (2.05 %), fitting its commitments into a revised military programming law that strengthens both nuclear deterrence and European expeditionary capabilities (El Demócrata – France; CESEDEN). Italy follows a logic similar to Spain: harmonizing the NATO dimension with the EU, with most decisions channeled through annual budgets and capability planning.

Poland and the Baltic countries represent the highest effort extreme: Poland allocates around 4.3 % of GDP to defense and the Baltics between 3 and 4 %, focusing almost all internal processing on expanding land forces, air defense, and ammunition reserves (El Demócrata – European NATO spending; Datosmacro – NATO). In Poland, moreover, the reception of the EU SAFE loan has required specific parliamentary decisions and overcoming presidential vetoes to authorize indebtedness and acquisition programs (El Demócrata – Poland presidential veto).

In the Netherlands – host of The Hague 2025 summit – and in the Nordic countries (Sweden and Finland, recently joined NATO), the situation is one of accelerated adjustment: they already meet or approach 2 %, prioritizing interoperability, air defense, and strengthening the northern and Baltic flank (LaSexta – NATO countries; MAEC – NATO members). Their parliaments are approving multi-year budgets and mainly technical legislative adaptations to integrate new responsibilities.

Political assessment of the processing

In summary, the processing of these “new distributions” does not follow a single legal channel, but three parallel national paths: reaching (and eventually exceeding) the 2 % of GDP, approving capability plans and industrial programs, and formalizing high-readiness force commitments. In Spain, the process is advanced in terms of political and budgetary decisions, but with uncertainties about its medium-term sustainability. In the main European allies, the emphasis is more on consolidating large rearmament programs than on ratification debates in the strict sense, except in cases like Poland where the volume of indebtedness and the speed of rearmament have generated specific political frictions.

Concise answer

The NATO founding treaties (basically the 1949 Washington Treaty) barely mention the Secretary General and do not exhaustively detail their powers; the position arises and is defined mainly by subsequent political decisions of the North Atlantic Council (NAC) and by the Alliance's established practice. Essentially, the Secretary General is NATO's highest civilian official, chairs the North Atlantic Council and main committees, acts as political spokesperson and guarantor of allied cohesion, and directs the organization's international civilian structure. They do not have operational military command power nor autonomous decision-making capacity over the use of force: their functions are political leadership, coordination, consensus promotion, and administrative management. Therefore, more than a classic “executive,” the Secretary General is a primus inter pares serving the decisions of the allied States.

Legal basis in the founding treaties

The 1949 North Atlantic Treaty, which is the true founding treaty, does not expressly establish the position of Secretary General nor list their powers. The Treaty merely creates:

– A collective defense Alliance (Article 5).
– A Council in which each State is represented (Article 9).
– The possibility to create “subsidiary bodies” as necessary (Article 9).

On this very open basis, the member States, gathered in the North Atlantic Council, later agree to create a permanent civilian structure and, within it, the figure of the Secretary General as administrative head and political coordinator. That is, the Secretary General's powers derive from Article 9 (Council's authority to organize itself and create bodies) and subsequent Council decisions, not from a detailed list in the Treaty text.

Institutional role within the Alliance

In practice, the Secretary General's central powers can be grouped into four main blocks:

1. Chairing the main political bodies

The Secretary General chairs the North Atlantic Council (NAC), NATO's highest decision-making body, where the major political action lines and decisions on operations, enlargements, partnerships, and strategic posture are adopted by consensus. Additionally, they usually chair other key committees, such as the Defence Planning Committee and the Nuclear Planning Group, when these meet in ministerial format, as well as meetings of Foreign and Defense Ministers when acting as NAC.

This chairmanship does not grant a personal vote nor the capacity to impose decisions, but it does provide a strong ability to guide debates, articulate commitments, and prepare consensus conclusions among allies, which in contexts of high political polarization is especially relevant, also for countries like Spain, which actively participates in these consensus dynamics.

2. Direction of the international civilian structure

The Secretary General is the head of NATO's International Secretariat, that is, of the civilian structure providing political, technical, and administrative support to decision-making bodies. In this area:

– Leads the international civilian staff (selection of senior officials, supervision, internal organization).
– Prepares and executes the civilian budget approved by the allies.
– Oversees the implementation of political decisions and mandates given by the Council, both at the Brussels headquarters and in allied offices and representations.

This facet as an administrative manager and “chief of staff” of the Alliance is key to ensuring that political decisions taken by governments, including the Spanish one, become programs, work plans, and concrete actions.

3. Political and diplomatic representation

The Secretary General acts as NATO's principal public representative:

– They are the political spokesperson for decisions and positions agreed by the Council.
– Maintain regular contacts with heads of State and Government, ministers, and international organizations (EU, UN, etc.).
– Participate in summits, conferences, and official visits, explaining and defending the allied stance.

Although they do not set NATO's stance by themselves, they have some leeway to interpret and emphasize aspects of the consensus decisions, which makes the position an influential piece of Euro-Atlantic security diplomacy, with direct implications for Spain's and other allies' external projection.

4. Consensus promotion and crisis management

A decisive part of their function is to act as an “honest broker” among allies:

– Discreetly mediates when there are significant disagreements (e.g., on operations, enlargements, or defense spending levels).
– Proposes draft compromises, schedules, and political formulas to reach consensus.
– In crisis situations (armed conflicts, hybrid attacks, tensions with third states) coordinates emergency Council meetings, prepares response options, and articulates the Alliance's strategic communication.

This capacity for crisis management and cohesion building is essential for the credibility of the collective defense clause, without altering the basic principle that ultimate authority always rests with the member States.

Limits of their powers

Despite their visibility, the Secretary General has clear limits:

– They do not have operational command over military forces; that role lies with strategic military commanders appointed by the allies.
– They cannot unilaterally decide operations or defense commitments; everything is adopted by consensus in the NAC.
– Their administrative and personnel decisions are framed by budgets and mandates approved by the Council.

In short, their powers are broad in terms of political leadership, coordination, representation, and management, but always as an executor and facilitator of the collective will of the allied States, as derived from the open framework of the Washington Treaty and the political decisions that develop it.

Concise answer

For a member country to increase its military contribution within NATO, there is no single “NATO permission,” but rather a set of internal legal requirements (constitutional, budgetary, and parliamentary control) and allied political commitments (such as the 2 % of GDP defense spending target) that must be respected. Each State must approve the increase in spending and personnel according to its own legal system (in Spain's case, complying with the Constitution, the National Defense and Budget Stability laws, and the control of the General Courts). At the same time, any relevant additional deployment, participation in missions, or hosting of NATO capabilities is coordinated with the collective decisions of the North Atlantic Council and with specific agreements on force presence on national territory. Therefore, the increase in contribution is a combination of internal political decisions and fitting within the Alliance's international legal framework, not an automatic authorization.

General NATO framework

NATO is governed by the North Atlantic Treaty, which recognizes the full sovereignty of member States to organize their armed forces. The Treaty does not impose a concrete legal obligation to spend an exact amount on defense, but establishes cooperation, collective defense (Article 5), and a commitment to maintain capabilities. The well-known 2 % of GDP defense spending target is a political commitment adopted at allied summits, not a legally enforceable NATO rule as if it were a court; therefore, the “requirement” is mainly political and reputational among allies.

When a country decides to increase troops, capabilities, or operations made available to NATO, these means are integrated into the allied command structure through decisions of the North Atlantic Council (where each country has veto rights). Legally, the key is that the State remains the owner of its forces and that their use is made according to the allied mandate and the internal legality of the country itself.

Internal legal requirements (with special reference to Spain)

In practice, the real legal requirements to increase military contribution are internal. In Spain, for example, increasing spending or personnel available to NATO requires:

First, compliance with the Spanish Constitution, which establishes the general framework of the Armed Forces and the role of the Government and the General Courts. Any sustained increase in military spending is reflected in the General State Budgets, which must be approved by law in the Congress and Senate. If there are no new Budgets and the previous ones are extended, the margin to increase the contribution requires internal adjustments or extraordinary credits also with the force of law.

Second, respect for the National Defense Law and other organic legislation regulating Spain's participation in international missions. To deploy more troops under NATO flag (for example, in deterrence missions in Eastern Europe or naval operations), the Government must have the authorization or at least the political control of the Courts, depending on the type of mission and established practice. This includes informing about maximum contingents, rules of engagement, and possible duration.

Third, compliance with budgetary stability and financial sustainability laws. A relevant increase in military spending must fit within approved deficit and debt targets and, if exceeded, would require adjustments in other items or regulatory modifications. This point usually generates political debate in Parliament, as it links social and economic policy priorities with allied commitments.

Specific agreements on presence and capabilities

Beyond the budget, increasing contribution may mean hosting new NATO infrastructures, bases, or capabilities on national territory. In Spain's case, this is articulated through specific international agreements (for example, defense agreements or status of forces agreements), governed by Article 94 of the Constitution and the International Treaties Law. If the agreement has relevant political-military character, affects territorial integrity or financial obligations, it must go through the Courts for authorization.

Likewise, any reinforced presence of allied forces is framed within the NATO Status of Forces Agreement (SOFA) and, where applicable, bilateral protocols establishing issues such as criminal jurisdiction, use of infrastructures, tax regime, or liability for damages. Although these instruments have international scope, their application requires adaptation to internal legislation (for example, in criminal or security matters).

Political dimension and parliamentary control

In all member countries, increasing military contribution to NATO has a predominantly political dimension: debates on whether to reach or exceed 2 % of GDP, on investment priorities (heavy equipment, cyber defense, personnel), and on the types of missions participated in. In parliamentary systems like Spain's, the Government is subject to control through specific plenary sessions, Defense Minister appearances, and votes on resolutions related to security and defense policy.

In summary, from a legal-political perspective, NATO sets the international framework and capability objectives, but concrete compliance depends on each national legal system. The key “legal requirement” is that any decision to increase military contribution has backing in the Constitution, defense legislation, budgetary procedure, and current international treaties, something that in Spain de facto requires consensus or at least sufficient parliamentary majority.