Pentagon weighs Europe troop withdrawal as Trump weaponizes NATO posture over Iran rift

The Trump administration is considering withdrawing US forces from NATO member states that refused to support the February 28 unilateral US-Israel military campaign against Iran, according to internal Pentagon and White House deliberations reported by the Wall Street Journal. The plan would close at least one major US base — potentially Ramstein Air Base in Germany or Naval Station Rota in Spain — and relocate forces to countries viewed as supportive, including Poland, Romania, Lithuania, and Greece. The proposal represents the most concrete threat yet to NATO’s military architecture since the alliance’s 1949 founding, with cascading implications for European defense spending, contractor revenues, and the geopolitical balance with Russia and China.

Force Posture as Leverage

The United States currently maintains roughly 84,000 troops across Europe, per European Command data. The Pentagon deliberations remain preliminary but reflect growing frustration within the administration over European allies’ refusal to contribute forces or basing rights during the Iran conflict. Secretary of State Marco Rubio framed the issue explicitly: “We are going to reexamine whether or not this alliance, that has served this country well for a while, is still serving that purpose or has it now become a one-way street, where America is simply in a position to defend Europe. But when we need the help of our allies, they’re going to deny us basing rights,” he told Fox News.

The proposal faces legal constraints. The 2026 National Defense Authorization Act requires the US to maintain at least 76,000 troops in Europe, with certification to Congress required for any reduction below that threshold, according to The Dispatch. This ceiling provides a floor for congressional oversight but does not prevent strategic reallocation among member states or closure of individual bases.

European Defense Spending Accelerates

The troop withdrawal threat arrives as European NATO members prepare for unprecedented defense budget expansion. At the June 2025 NATO Hague Summit, members agreed to nonbinding commitments to increase defense budgets to 5 percent of GDP by 2035, up from current levels averaging 1.8 percent, per Al Jazeera. European NATO members spent $454 billion in total in 2024, representing 30 percent of alliance-wide spending, according to Stockholm International Peace Research Institute data.

Should Europe reach 3.5 percent of GDP by 2032, this would translate to an additional $300 billion per year, marking a 70 percent increase from 2024 levels, according to Morningstar analysis cited by Al Jazeera. Per McKinsey, European Defense Spending could reach €800 billion by 2030, driven by threat perception and diminishing confidence in US security guarantees.

Contractor Revenue Exposure

European defense contractors have seen market capitalizations surge on rearmament expectations. Rheinmetall, now Europe’s largest defense firm, reached an $81.5 billion market capitalization by December 2025, according to Motley Fool data. Goldman Sachs analysis highlights procurement spending increases but notes industrial capacity constraints and fragmentation challenges across national defense industries.

The strategic gap extends beyond procurement budgets. European militaries lack integrated command infrastructure, strategic airlift capacity, satellite surveillance networks, and missile defense systems that US forces currently provide. Bruegel estimates replacing US military presence would require a 300,000-troop equivalent force costing over €250 billion annually — figures that dwarf current budget expansion plans.

Energy and Geopolitical Realignment

The troop withdrawal debate intersects with European energy dependence on both US LNG imports and residual Russian fossil fuel flows. By 2030, up to 40 percent of EU gas and LNG imports could come from the US, up from 27 percent in 2025, according to Vattenfall projections. Simultaneously, EU countries continue paying over €1 billion monthly to Russia for fossil fuels despite sanctions regimes, per Centre for Research on Energy and Clean Air data.

European diplomats view the pattern as structural rather than tactical. “It’s like Groundhog Day really. The reasons can be different — defense spending, Greenland, Strait of Hormuz or something else — but the threats keep on returning,” one European diplomat told The Hill. Another stated bluntly: “No going back to the old days. The best response is to build up Europe’s ability to carry the bulk of NATO operations without Washington.”

What to watch

Pentagon finalisation of base closure recommendations will signal whether the troop withdrawal threat remains rhetorical leverage or advances to operational planning. Congressional testimony on the 76,000-troop floor requirement will clarify legal constraints on any drawdown. European defense procurement announcements — particularly joint orders for air defense systems, satellite capabilities, and strategic lift — will indicate whether rhetoric translates to industrial consolidation. Quarterly earnings from Rheinmetall, BAE Systems, and Airbus Defense will quantify order book growth. Most critically, watch whether Poland, Romania, and the Baltic states publicly request increased US force presence, creating political cover for the administration to execute reallocations without formal NATO withdrawal. The precedent matters more than the troop count: weaponizing force posture as punishment rewrites alliance credibility in ways budget commitments cannot repair.