Pentagon pares back NATO war pledges

The visible story is Donald Trump’s reshuffle of American troops across Europe. The more important one is happening behind closed doors, in NATO’s classified planning system. The US is reducing what it promises to provide in a European war, and the awkward fact is that no parliament on either side of the Atlantic has a clear way to scrutinise the cut.

On May 22, Alex Velez-Green, deputy to Pentagon policy chief Elbridge Colby, told allied defence officials in Brussels that the US would "significantly scale down" its contribution to the NATO Force Model, the alliance’s tiered system for rushing troops into place during a crisis (Military Times, Defense News). NATO Secretary General Mark Rutte confirmed the announcement but said he was "not allowed to disclose" details (Stars and Stripes).

The model, adopted in 2022-2023, assigns national forces to NATO defence plans in three waves: about 100,000 troops within 10 days, 200,000 within 30 days, and 500,000 within six months. The American Tier 3 commitment matters because these are the formations that would cross the Atlantic if a war became prolonged. Without them, the defence plans for NATO’s eastern flank risk becoming "diplomatic fiction" (CSIS).

The Oversight Gap

The 2026 defence budget law prevents the Pentagon from cutting US forces physically stationed in Europe below 76,000 without congressional certification (Washington Examiner). That sounds like a hard brake. It is not, at least not for the wartime reinforcements that sit in classified NATO plans and would deploy from American soil. Those pledges carry no statutory floor and remain inside presidential authority.

That distinction is doing a lot of work. When Trump cancelled a 4,000-soldier brigade deployment to Poland in mid-May, it produced congressional anger and front-page coverage (Stars and Stripes). Rotational deployments, where units cycle through roughly every nine months, can be stopped quickly. Permanent stationing, where families move and bases are built, is far harder to unwind. But Tier 3 reinforcement pledges can be cut without a public paper trail and without Congress getting a vote.

Competing for American Attention

European governments are not responding as a bloc. They are making separate bids to stay useful to Washington.

Poland’s Deputy Defence Minister Paweł Zalewski offered the Pentagon "permanent stationing" during a May 20-21 visit to Washington, saying Warsaw would "build a small city" for US troops and pay the costs (Polsat News). The Pentagon promised a proposal "in the coming weeks" but made no concrete commitment (gov.pl).

Germany is losing a Stryker brigade, a medium-armoured combat unit, from Bavaria. Chancellor Merz is trying to turn the loss into an argument for speeding up domestic missile programmes. His view is that Washington’s failure to station long-promised Tomahawk land-attack cruise missiles in Germany, intended as a counter to Russian intermediate-range weapons, reflects US production constraints rather than political punishment (Tagesspiegel, Spiegel).

Romania received praise from Secretary Rubio for hosting extra US troops for Iran-related operations, but not a promise of permanent presence. A presidential adviser put the relationship bluntly: Romania is "relevant" to Washington, but not "vital" (HotNews). Estonia’s defence minister said US forces would stay, while warning that "political decisions in the US are now reaching the military level" (ERR).

France is the outlier because it prepared alternatives before the drawdown. Paris has built a framework to bring eight European partners into French nuclear deterrence planning and consultation, and is pushing to place more European officers in senior NATO command posts (Le Monde, IFRI). But French autonomy was built to sit alongside American power, not to substitute for it.

For Ireland, a non-NATO state with a long neutrality tradition, this still lands close to home. EU security rests in practice on NATO’s eastern defences, and any weakening of American reinforcement plans changes the balance inside Europe, including the defence debate Dublin has tried to keep carefully bounded.

At NATO’s July 7-8 summit in Ankara, the alliance has two choices: rewrite its defence plans around reduced American inputs, or challenge the cuts publicly. Rutte has framed the agenda as ending "unhealthy over-reliance on one ally", which accepts the American premise while avoiding the sharper question of what the withdrawal means. NATO’s plans were built on full US wartime participation. The US is now paring back that assumption through the one channel where no legislature has a vote, while European capitals compete for bilateral deals. Whether any government forces the classified arithmetic into the open before Ankara is still unanswered.