JA21 breaks with Dutch mainstream on Ukraine NATO membership

A foreign policy debate at De Balie in Amsterdam on Monday evening laid bare a fracture in Dutch politics that goes deeper than the usual coalition arithmetic. JA21, the hard-right party founded in 2020 after a split from Forum voor Democratie, declared its opposition to Ukrainian membership of both NATO and the European Union. Every other party represented, VVD, D66, CDA, GroenLinks, PvdA and Volt, defended the current trajectory toward accession.

A solitary position at De Balie

Michiel Hoogeveen, JA21's candidate for the next parliament and a former member of the European Parliament, did not mince words. Ukraine, he said, is "too much in the Russian sphere of influence" for its integration into Western structures to be anything but a "huge risk". NATO membership, in his view, constitutes an "unnecessary provocation". The formulation was deliberate: not a question of timing or conditions, but a rejection in principle. The other five participants, Laurens Dassen for Volt, Harmen Krul for the CDA, Daniëlle Hirsch for GroenLinks, PvdA, Eric van der Burg for the VVD and Jan Paternotte for D66, all disagreed, though with varying emphasis on speed, conditionality and the role of the United States.

The debate, organised by De Balie under the broad banner of the Netherlands' role in international affairs, was not a formal parliamentary proceeding. It was, however, a rare moment of direct confrontation between the parties likely to shape the next government. Polls published in the past fortnight consistently place JA21 on 13 seats, up from the three it won in November 2023. That projection would make it the sixth-largest party in the Tweede Kamer and a potential coalition partner for a centre-right bloc, or a decisive opposition force if the centre-left reassembles.

The Russian sphere argument

Hoogeveen's "sphere of influence" framing echoes a realist tradition that treats great-power sensitivities as immutable facts rather than negotiable claims. It is an argument with a pedigree in European diplomacy, think of the Finnish cold-war doctrine of active neutrality, but it sits awkwardly alongside JA21's self-description as a conservative-liberal party committed to national sovereignty. If Ukraine's geography disqualifies it from Western alliances, the same logic could be applied to Moldova, Georgia or the western Balkans. Hoogeveen did not address that implication on Monday.

He did, however, invoke NATO's own language against the alliance. The 2023 Vilnius summit communiqué declared that Ukraine's path to membership is "irreversible", a formulation carefully negotiated to avoid a timetable while signalling political commitment. Hoogeveen dismissed this as rhetoric disconnected from military reality. "NATO maintains that Ukraine has made an 'irreversible step' toward membership," he said, "but that does not make it wise." The distinction between a political pledge and a strategic assessment is where the Dutch debate now lives.

NATO's irreversible step versus Dutch scepticism

Jan Paternotte's rebuttal was the sharpest of the evening. "This is a misjudgment," the D66 leader said, pointing to the Baltic states. Estonia, Latvia and Lithuania joined NATO in 2004. Since then, Russia has not attacked them, despite hybrid operations, cyber campaigns and periodic nuclear sabre-rattling. Paternotte's argument rests on the empirical record of deterrence: Article 5 has held where security guarantees short of alliance membership, think of the 1994 Budapest Memorandum, have not. The Baltic precedent is the strongest card in the pro-accession hand, and Hoogeveen had no ready answer.

The VVD's Eric van der Burg, whose party leads the current caretaker cabinet, took a more technocratic line. He emphasised the reform benchmarks Ukraine must still meet for EU accession, judicial independence, anti-corruption frameworks, market alignment, and suggested the Netherlands should insist on rigorous monitoring. That is the standard Dutch position: supportive in principle, exacting in practice. It also allows the VVD to keep JA21 at arm's length without conceding ground to the left on enlargement scepticism.

Trump's shadow over European security

The most revealing moment came when Hoogeveen cited Donald Trump. "It is not up for debate," he said, "as U.S. President Donald Trump has already stated that he does not want Ukraine to join the military alliance." The remark was striking for two reasons. First, it treated a foreign leader's preference as a binding constraint on Dutch policy. Second, it assumed Trump's return to the White House, or at least his continued dominance of the Republican foreign-policy debate, as a given. Neither assumption is universally shared in The Hague, but both are gaining traction in European chancelleries.

The Trump factor reshapes the calculus for every European government. If the United States signals that Article 5 coverage for a new member is not credible, the deterrence value of NATO membership drops sharply. That is a conversation European capitals are having in private; Hoogeveen brought it into the open. Whether he did so out of conviction or tactical alignment with a transatlantic populist current is a question JA21's voters will answer for themselves.

Gaza debate reveals deeper isolation

Ukraine was not the only file where JA21 stood alone. On Gaza, the other five parties converged on a formula: pressure the Israeli government to advance a ceasefire and a political horizon for Palestinians, while condemning Hamas. Hoogeveen rejected the premise. He insisted the focus must be on implementing Trump's peace plan, a reference to the 2020 Abraham Accords framework and the stillborn "deal of the century", before any European pressure campaign. The effect was to place JA21 to the right of the VVD, traditionally the most Atlanticist party in the Dutch spectrum, and to the right of the CDA, which has historically grounded its foreign policy in Christian-democratic solidarity with Israel.

That isolation may be the point. JA21's electorate is drawn from voters who feel the mainstream parties have converged on a managerial consensus that ignores cultural sovereignty, migration control and a sceptical view of multilateral institutions. By staking out positions that are uncomfortable for potential coalition partners, Hoogeveen signals authenticity to that base. The risk is that the signal becomes a veto: a party that cannot compromise on foreign policy is a difficult partner in a parliamentary system built on compromise.

Polling surge complicates coalition arithmetic

The 13-seat projection is not an outlier. Three separate polling averages, Ipsos, Peil and Kantar, have placed JA21 between 11 and 14 seats since September. That is a tripling of its 2023 result and puts it within striking distance of the CDA (currently polling 15, 17) and D66 (12, 14). In a fragmented landscape where the two traditional blocs, centre-right and centre-left, each fall short of 76 seats, a party of JA21's size becomes a potential kingmaker. The VVD, CDA, BBB and JA21 together could command a majority; so could a centre-left combination with GL, PvdA, D66, Volt and PvdD, though the arithmetic is tighter.

The question for the VVD and CDA is whether they can absorb JA21's votes without adopting JA21's positions. On migration and climate policy, the overlap is substantial. On foreign policy, the gap exposed at De Balie is wide. A coalition agreement would need to paper over Ukraine, Gaza, the EU's strategic autonomy agenda and the Netherlands' contribution to NATO's eastern flank. That is a negotiation that has not yet begun in earnest, but Monday's debate was a preview of the friction points.

What the Baltic precedent actually shows

Paternotte's Baltic argument is powerful but incomplete. Estonia, Latvia and Lithuania joined NATO in a different strategic context: Russia was weaker, the alliance was expanding by consensus, and the new members brought capable militaries and intact institutions. Ukraine in 2025 fights a war of survival on its territory, its institutions are corroded by corruption, and its military is dependent on Western munitions flows. Article 5 does not automatically translate into credible deterrence when the prospective member is already a battlefield. That is the realist counter-argument Hoogeveen did not fully articulate, and which the mainstream parties have not fully answered.