Munich Security Conference 2026 – European Rearmament and Deterrence Recalibration

Key Judgements                   

• The 2026 Munich Security Conference signalled that the post-Cold War model of European security dependence is eroding, as allies prepare for a future in which a US security guarantee cannot be assumed to be stable or unconditional.
• Emerging consultations among France, the UK and Germany on strengthening European deterrence using existing French and British nuclear capabilities signal a profound recalibration in European strategic posture.
• As European governments expand defence spending and commit to sustained rearmament, the credibility of this strategic shift will depend on whether increased budgets translate into deployable military capability rather than remaining largely declaratory.

Objective

This report assesses how discussions at the Munich Security Conference (13–15 February) reflect a structural shift in Europe’s defence posture, focusing on the drivers of rearmament, the emerging rethink of nuclear deterrence, and the constraints that will shape Europe’s future security direction.

Context

The 2026 Munich Security Conference took place against the backdrop of continued war in Ukraine and sustained Russian hostility toward the European security order. Western European leaders, including German Chancellor Friedrich Merz, French President Emmanuel Macron and UK Prime Minister Keir Starmer, arrived amid growing concern over a widening deterrence gap. While Russia remains the most immediate threat, with the outcome of the Ukraine war described as an urgent and ‘existential’ situation for Europe, the 2026 Munich Security Report, titled ‘Under Destruction’, framed a deeper structural instability: an era of alliance politics characterised by unpredictable US signalling. What some officials described as a ‘wrecking ball’ dynamic has unsettled long-standing assumptions about the durability of the American security guarantee. As a result, the core question for Western European governments is no longer whether defence spending must increase, but how rapidly strategic dependency on Washington can be reduced.  Munich therefore became a forum not only for reaffirming NATO commitments, but for exploring greater European responsibility within the alliance. France, the UK and Germany emerged central to this discussion, including consultations on whether French and British nuclear capabilities could reinforce European deterrence. At the same time, persistent shortfalls in munitions, air defence and industrial output underscored the gap between political intent and operational readiness.

Timetable of events leading up to.

February 2022 – Russia’s full-scale invasion of Ukraine  – Fundamentally recalibrates European threat understanding and reveals capability cracks.

2023-24 – European defence budgets skyrocket – Production constraints restrain capability progression.

February 2025 – US Vice President JD Vance’s Munich speech  – Signalled a more conditional approach to transatlantic support, exposing visible strains within the alliance.

June 2025 – NATO Summit, The Hague – New benchmark set: 3.5% of GDP core defence and 1.5% broader security resilience.

Late 2025 – US rhetoric about Greenland  – Creates diplomatic strain and highlights emerging fractures within the alliance.

February 2026 – Munich Security Conference (‘Under Destruction’) – European leaders frame rearmament as structural and publicly acknowledge discussions on supplementing the US nuclear umbrella with French and British capabilities.

Analysis

Moving Toward Strategic Sovereignty

The 2026 Munich Security Conference confirmed that the change in Europe’s defence posture is no longer reactive but structural. Since 2021, European NATO members have increased defence spending by roughly 30%, and the 2025 Hague target,  3.5% of GDP for core defence within a broader 5% ambition, indicates long-term intent rather than temporary adjustment. What has changed is not only the increased threat from Russia, but the degree of uncertainty surrounding US strategic continuity. As European leaders increasingly plan for a future in which US security guarantees are less predictable, higher defence spending is used to hedge against strategic uncertainty. This reflects a gradual shift toward greater European responsibility within the transatlantic framework. Whether that transition stabilises the alliance or produces further divergence will depend on how coherently Europe can sustain political and fiscal consensus.

Breaking the Nuclear Taboo

Consultations among France, the UK and Germany regarding how French and British nuclear capabilities might reinforce European deterrence represent a deeper psychological shift. Germany is not seeking nuclear weapons, but its willingness to engage in deterrence architecture discussions marks a significant departure from its traditionally cautious posture. Once extended deterrence becomes a matter of active consideration rather than inherited assumption, it changes strategic signalling. Moscow must now account for a Europe more openly engaged in nuclear burden-sharing debates, while Washington faces a Europe preparing contingencies. Even absent institutional reform, the act of discussing nuclear integration reshapes expectations about Europe’s long-term strategic posture.

The Gap Between Intent and Capability

Ambitious spending commitments alone will not secure deterrence credibility. Throughout the Munich conference, warnings about ammunition shortages, air defence shortfalls and industrial bottlenecks revealed that financial pledges still outpace operational readiness. Initiatives such as the SAFE framework and closer UK/EU industrial coordination are designed to address financial and structural weaknesses, but industrial mobilisation requires time, skilled labour and sustained political will. If higher budgets fail to produce visible capability gains within the next several years, the strategic shift outlined at Munich 2026 risks being perceived as rhetorical rather than substantive and will not go unnoticed by Moscow. Conversely, if spending translates into scaled production and improved readiness, Europe will materially strengthen its deterrent posture and bargaining power within NATO.