Jean-Luc Mélenchon challenges Franco-German EU ties

Jean-Luc Mélenchon is turning France’s 2027 election into a test of the Franco-German partnership that anchors the European Union.

The left-wing candidate has signaled that, if elected, he would not automatically honor recent understandings between French President Emmanuel Macron and German Chancellor Friedrich Merz on defense, nuclear deterrence and industrial policy. His position matters because Paris and Berlin remain central to EU dealmaking even as their interests have diverged on trade, defense and relations with Washington.

Mélenchon targets Berlin’s model

Mélenchon’s critique is not a new campaign improvisation. In 2015, he published a book attacking Germany’s economic model, arguing that it had been wrongly treated in France as an example to copy because of Germany’s lower unemployment and stronger growth at the time.

His party, France Unbowed, frames the dispute as ideological rather than anti-European. Aurélien Taché, a France Unbowed lawmaker on the French National Assembly’s foreign affairs committee, said: "The Germans are imposing ordoliberalism [a German-inspired vision of free-market economics with state oversight] on Europe."

The party’s argument is that the Paris-Berlin axis has worked less as a balanced engine than as a channel for German preferences inside the EU. Taché said the left opposes ordoliberalism, not Europe itself, placing economic policy at the center of Mélenchon’s foreign-policy case.

Berlin sees a cooperation risk

German officials are still more focused on Marine Le Pen, whose far-right National Rally has promised a more confrontational posture toward Brussels and lower French payments into the EU budget. Polling cited in the source article indicates Le Pen would defeat Mélenchon if both reached a runoff.

Yet lawmakers in Berlin do not dismiss Mélenchon’s capacity to disrupt EU coordination. Roland Theis, a lawmaker from Merz’s conservative bloc, said Mélenchon’s stance on European policy and Germany "would make him a massive problem for Franco-German cooperation."

Anton Hofreiter, a Green lawmaker who chairs the Bundestag’s European affairs committee, warned that a Mélenchon presidency could push European projects ahead without France. He pointed to defense capabilities as one area where coalitions could form around Paris if cooperation at the top level breaks down.

The concern is sharpened by existing disputes between France and Germany. Berlin has supported the EU-Mercosur trade agreement with South America, while Paris has opposed it; the two governments have also faced strain after the collapse of a joint next-generation fighter jet project.

NATO, Spain and Article 42

Mélenchon’s foreign-policy paper, released earlier this month and running about 20 pages, calls for France to leave NATO because of what it describes as Washington’s "openly hostile" posture toward the alliance. National Rally has taken a less sweeping position, proposing departure from NATO’s integrated command rather than full withdrawal.

The document also says France should uphold the EU’s Article 42 mutual-assistance clause and make its extension to affiliated territories, including Greenland, an "absolute priority." At the same time, Mélenchon’s camp argues France should not be locked into a geographic bloc it sees as excessively Atlanticist.

That worldview points France toward different diplomatic partners. Mélenchon favors stronger ties with China, French-speaking African countries and South American states, and he views Spain’s Prime Minister Pedro Sánchez as a better European ally because of Sánchez’s more confrontational approach toward President Trump and Israel.

For Berlin, the strategic mismatch is direct. Germany continues to treat the transatlantic relationship as central to its foreign policy, even as relations with President Trump remain turbulent and Germany seeks a larger defense role after Russia’s invasion of Ukraine.

Three paths for Europe

If Mélenchon remains a strong but defeated candidate, the global macro effect would be limited, but his campaign could still pull French debate away from trade liberalization and NATO alignment. For the Mélenchon campaign, that would validate an anti-ordoliberal message; for European industry, it would keep uncertainty alive around defense procurement and EU trade deals.

If he reaches the runoff and loses to Le Pen, Berlin’s main risk calculus would shift toward a far-right presidency rather than a left-wing rupture. That would leave Mélenchon’s movement influential in parliament and street politics, while sectors exposed to EU budgets and defense planning would face a different set of pressures from National Rally’s euroskeptic program.

If Mélenchon wins, the mechanism of disruption would be institutional rather than symbolic: France could slow joint projects, reopen Macron-Merz commitments and seek alliances outside the traditional Paris-Berlin channel. The macro consequence would be a less predictable EU policy cycle; France Unbowed would gain leverage over the European agenda, while defense, trade and industrial sectors would have to price in longer negotiations and alternative coalitions.

One uncertainty is how much of the Franco-German relationship could actually be unwound by one president. Frédéric Petit, a centrist French lawmaker representing citizens in Germany, argued that dual citizens, shared organizations and joint policies would make an immediate rupture difficult, regardless of the election result.