German Foreign Minister Johann Wadephul used the conference of ambassadors in Berlin on Thursday to deliver a blunt warning: the democratic centre must explain its foreign commitments more forcefully or risk a repeat of the 1930s. His intervention came three days after the Alternative for Germany (AfD) captured 43.8% of the vote in Saxony-Anhalt, more than doubling its 2021 share and pushing Chancellor Friedrich Merz's Christian Democrats into a distant second place at 17.2%.

A historic result reshapes the domestic debate

The AfD's performance was not merely its own record; it was the highest vote share won by any party in a German state since reunification. Ulrich Siegmund, the party's lead candidate, built his campaign on a simple arithmetic: every euro spent abroad is a euro denied to German pensioners, patients and infrastructure. He told regional broadcaster MDR that "every minute, €20,000 goes to Ukraine. That is all money we are missing." The message resonated in a state where average incomes lag the national median and public services have been stretched for years.

Wadephul did not dismiss the sentiment. He acknowledged that scepticism about NATO and Ukraine aid had become "visible and tangible" in recent state elections. But he argued that retreat would be the wrong response. "The way forward was not to retreat from Germany's commitments, but to do a better job of explaining why they matter," he said. The minister framed the choice in historical terms that carry unusual weight in German politics: "Germany knows from the Weimar Republic what could happen if Democrats are not ready to defend their system. We have to show that we have learned our lesson."

Guns versus butter moves from slogan to spreadsheet

The guns-versus-butter debate is no longer abstract. According to calculations by the Kiel Institute for the World Economy, Germany is set to spend roughly €140 billion on defence next year, a figure that almost matches the €145 billion federal contribution to the pension system. In 2022, by contrast, defence expenditure stood at about €50 billion against €115 billion for pensions. The tripling of the defence budget in five years reflects the Zeitenwende declared after Russia's full-scale invasion of Ukraine, but it also creates a fiscal squeeze that the AfD has exploited with precision.

Merz's coalition is now negotiating the 2027 budget against this backdrop. The Chancellor has insisted that the debt brake will be respected, which means either taxes rise, other spending falls, or the defence target is missed. Each option carries political risk. The AfD's surge suggests that a growing segment of the electorate rejects the premise that higher defence spending serves German security at all.

NATO's leader plays down the political risk

Mark Rutte, speaking at the same ambassadors' conference, backed Wadephul's broader message but refused to treat the AfD's rise as an alliance crisis. "NATO would work with whoever is elected," he said, adding that he had "no doubt that the alliance will stay very strong." Rutte's pragmatism reflects a structural reality: NATO operates by consensus, and a German government that included the AfD, currently unlikely given the firewall maintained by other parties, would still face treaty obligations that are difficult to unwind.

Yet the Secretary-General's confidence may understate the diplomatic friction. A German foreign policy that questions the value of eastern flank deterrence or delays ammunition deliveries would weaken NATO's eastern members' trust, regardless of formal treaty compliance. Wadephul's Weimar reference was aimed as much at domestic complacency as at the far right: the argument is that democratic erosion begins with the failure to defend the system's own commitments.

The Weimar analogy and its limits

Invoking Weimar is a rhetorical device with a long history in the Federal Republic. Every generation of German leaders has been taught that the Republic's death came not from a single coup but from the steady abandonment of democratic norms by parties that considered themselves mainstream. Wadephul's version focuses on the duty of democrats to defend the system actively. Critics might note that the AfD is currently polling nationally around 20%, not the 43.8% it achieved in Saxony-Anhalt, and that the firewall against cooperation remains intact in Berlin. But the state result cannot be dismissed as a regional protest: Saxony-Anhalt's demographics, older, poorer, more rural, resemble parts of eastern Germany that will matter in the next federal election.

Budget negotiations as the next flashpoint

The coalition's immediate challenge is numerical. To meet the NATO target of 2% of GDP on defence while keeping the debt brake intact, the government must find roughly €30 billion in savings or new revenue. The pension system, already absorbing €145 billion in federal funds, is politically untouchable for the CDU and its likely coalition partners. Health care and long-term care costs are rising structurally. That leaves discretionary spending, education, research, climate transition, development aid, as the only variable. The AfD will portray every cut there as proof that the establishment prioritises Kyiv over Cologne.

Wadephul's speech was, in effect, an attempt to pre-empt that narrative. By invoking Weimar, he signalled that the government understands the stakes are not merely fiscal but constitutional. Whether the argument reaches the voters who backed Siegmund is another question. The AfD's supporters tend to distrust mainstream media and institutional messaging; they hear "Weimar" as a smear, not a warning.

A test of political will

The foreign minister's appeal to the ambassadors was also an appeal to his own cabinet colleagues. The 2027 budget must be finalised by autumn. If the coalition cannot agree on a package that funds defence without visibly cannibalising domestic priorities, the AfD's argument, that the political class serves foreign interests first, will gain further ground. Wadephul's Weimar warning implies that the defence of democracy includes the defence of the budget choices that sustain it. The next few months will show whether the centre can make that case stick.

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German Federal Foreign Office · Alternative for Germany · Christian Democratic Union · NATO · Kiel Institute for the World Economy