Europe's Defence Spending Surge Exposes a Deeper Structural Failure

At the NATO Summit in The Hague in June 2025, all 32 alliance members except Spain committed to an ambitious two-tier defence spending target: 3.5 percent of GDP on core military expenditure and an additional 1.5 percent on security-related investment, amounting to a combined 5 percent of GDP by 2035. Secretary General Mark Rutte called it a transformational leap for collective defence. The numbers are certainly historic. European NATO members and Canada collectively spent more than $482 billion on defence in 2024, and if the trajectory holds, the European total alone could approach €800 billion annually by the end of the decade. Norway, which committed to the full 5 percent target, has already raised its defence budget from €5.7 billion in 2021 to €16 billion in 2026. The United Kingdom, which would become NATO's second-largest spender behind Germany if the United States were excluded, is contemplating increases that EY analysts estimate could add £30 billion in annual economic output and lift GDP by 0.8 percent. The money, by every available measure, is real.

The problem is that the output is not. According to McKinsey's February 2026 defence dashboard, drawn from official procurement data across the alliance, equipment stocks in European NATO countries remain below their 2021 levels. This is despite three years of the highest defence spending since the Cold War, billions donated to Ukraine, and a cascade of new procurement contracts. The money is flowing through a system that was never designed to produce collective military power. It was designed to sustain national industries.

European defence procurement is fragmented not by accident but by deliberate design accumulated over decades. France procures more than 80 percent of its defence equipment from French companies, and Germany does the same from German firms, according to research by Bruegel economists published in Intereconomics. Italy, Spain, and Poland follow the same pattern. A defence minister who channels procurement funds to a domestic manufacturer secures jobs, maintains sovereign industrial capacity, and retains leverage in coalition politics. One who supports joint European procurement through a supranational mechanism transfers that patronage to Brussels and gets less credit at home. The incentives have pointed consistently toward national procurement for three decades, and acknowledging this in official documents would require European governments to indict their own behaviour. They do not.

The operational consequences are measurable and alarming. European NATO members currently operate 12 different main battle tank platforms. The United States operates one. European platform fragmentation has increased by nearly 10 percent since 2014, according to the same McKinsey analysis, driven primarily by land systems and missiles. This proliferation of incompatible platforms is the direct output of a procurement system optimised for domestic industrial distribution rather than collective military effectiveness. When forces from different European nations deploy together, as they have in NATO battlegroups in the Baltics, the logistical burden of maintaining a dozen different supply chains for ammunition, spare parts, and maintenance procedures erodes the very interoperability that the alliance depends upon.

The European Union has attempted to address this structural weakness, but its instruments remain modest relative to the scale of the problem. The European Defence Industry Programme, or EDIP, allocates €1.5 billion for 2025 to 2027 to incentivise joint weapons production and enhance collaboration between defence manufacturers across member states. In March 2026, the United Kingdom, Finland, and the Netherlands announced a new joint procurement mechanism under the Joint Expeditionary Force framework, aiming to pool demand and accelerate procurement of critical capabilities such as munitions by 2027. The European Economic and Social Committee warned in April 2026 that while the Commission's roadmaps set ambitious targets for EU-wide defence readiness, these can only succeed if fragmentation is addressed through expanded joint procurement that reduces costs, improves interoperability, and strengthens the European industrial base.

Yet these initiatives remain peripheral to the dominant procurement model. Article 346 of the Treaty on the Functioning of the European Union allows member states to derogate from internal market rules for defence procurement on national security grounds, and it is invoked routinely to shield domestic defence industries from competition. The EDIP's €1.5 billion over two years is dwarfed by the hundreds of billions flowing through national channels. The JEF mechanism, while promising, covers only a subset of European NATO members. Norway's decision to triple its defence budget in five years is impressive in isolation, but the bulk of that spending will flow to Norwegian and Nordic suppliers rather than contributing to a genuinely integrated European defence industrial base.

The war in Ukraine has provided an operational dataset that European defence planners cannot credibly claim not to have studied. The conflict has demonstrated that industrial throughput, the ability to produce artillery shells, air defence interceptors, and precision munitions at scale and sustainably over years, matters more than the sophistication of individual platforms. Russia's military, despite heavy losses, has been able to regenerate forces through mass production backed by a wartime economy. European NATO countries, by contrast, have struggled to scale production of 155-millimetre artillery ammunition beyond a few hundred thousand rounds annually across the entire continent, while Ukraine alone fires that quantity in months.

The strategic implication is stark. Europe can continue to increase defence spending year after year and still fail to generate the military power that spending is supposed to buy, unless the procurement model changes fundamentally. The 5 percent of GDP target agreed at The Hague will channel vastly more money into the same fragmented national systems that have already demonstrated their inability to translate expenditure into capability. Russia's planners understand this structural weakness, and their force generation calculations almost certainly account for it. The question for European leaders is whether they will acknowledge what their own data shows before the gap between declared ambition and operational reality becomes a vulnerability that adversaries can exploit.