U.S. Defense Secretary Pete Hegseth walked into NATO headquarters in Brussels and delivered the kind of speech allies do not forget quickly. It was sharp, public, and laden with a clear warning: the era of Europe’s heavy reliance on American military power may be entering a new phase.
Speaking to NATO defense ministers on Thursday, June 18, 2026, Hegseth announced a six-month Pentagon review of America’s military posture and basing in Europe. The review could shape how many U.S. forces remain on the continent, where they are stationed, and what Washington expects from allies who have long depended on American muscle for deterrence.
A Public Scolding Inside NATO’s House
Hegseth’s central complaint was familiar, but his tone was far more direct than what NATO allies usually hear behind closed doors. He accused some European governments of moving too slowly on defense spending and of treating U.S. security guarantees as if they were permanent, automatic, and cost-free.
He argued that NATO must return to what he called “NATO 3.0,” a harder, more military-focused alliance where Europe leads on its own conventional defense. In his telling, NATO had drifted after the Cold War into bureaucracy, speeches, and social priorities while neglecting tanks, air defenses, fighters, missiles, and the industrial base needed for modern war.
That argument was aimed not only at smaller allies, but also at wealthy European countries with large economies. Hegseth said the United States could no longer pay more for Europe’s defense than Europe itself was willing to pay. He also warned that future U.S. NATO dues could be linked to whether allies meet defense spending targets.
The Iran War Added Fuel to the Fire
Defense spending was only part of Hegseth’s anger. He also criticized allies that denied U.S. forces access to bases, ports, or overflight routes during the conflict with Iran. He called that refusal “shameful,” saying it placed American service members at greater risk.
According to Hegseth, the United States expected allies to provide predictable access when U.S. aircraft or ships needed to move quickly. Instead, some governments raised legal objections, criticized Washington, or refused cooperation. For Hegseth, that was not just a logistical problem. It was a test of alliance loyalty.
This is where the review becomes more than a budget fight. The Pentagon now wants to examine whether U.S. forces in Europe are positioned in countries that can be counted on during a crisis. In simple terms, Washington is asking a blunt question: why should American troops and equipment remain in places where leaders may not allow them to operate when America says it needs them?
Europe Is Spending More, But Washington Wants Faster Change
Hegseth’s speech also collided with a complicated reality. European allies and Canada have sharply increased defense spending since Russia’s full-scale invasion of Ukraine in 2022. NATO says all allies met or exceeded the old target of spending at least 2% of GDP on defense in 2025, while European allies and Canada increased spending by about 20% from the previous year.
NATO Secretary General Mark Rutte has highlighted those numbers as proof that Europe is finally moving. He has also tried to calm fears about U.S. reductions, saying NATO planning tools do not always show what allies would do in an actual war.
But Hegseth’s point was not simply that Europe should spend more. His argument was that Europe must spend differently, faster, and with a sharper focus on replacing American capabilities. That matters because the United States has already reduced some contributions to NATO crisis forces, including high-end capabilities that European militaries cannot easily replace overnight.
Reuters reported that those reductions affect assets such as fighter jets, drones, refueling aircraft, ships, and other capabilities used in a major crisis. German Defense Minister Boris Pistorius warned that removing such assets too quickly without a clear replacement plan could create “dangerous capability gaps in Europe.”
What This Means for U.S. Troops in Europe
The review does not mean an immediate mass withdrawal of U.S. troops from Europe. Hegseth did not announce a specific number of forces to be removed, nor did he name countries that could lose U.S. deployments. The process will include input from the U.S. military, European Command, Congress, and allies.
Still, the direction is clear. The Trump administration wants fewer automatic commitments, more European responsibility, and a U.S. military that can shift attention to global threats beyond Europe. That includes the possibility of simultaneous conflicts in different regions, especially if tensions rise in the Indo-Pacific.
There are limits, however. AP reported that the United States does not plan to withdraw its nuclear weapons from Europe, which remain central to NATO’s deterrence strategy. That means Washington is not walking away from the alliance entirely. Instead, it is trying to redesign the bargain.
For Europe, the challenge is immediate. Governments must convince Washington that they are serious about defense, not only in speeches but in budgets, factories, weapons orders, troop readiness, and crisis access. For the United States, the challenge is managing the transition without weakening deterrence at the very moment Russia is watching for cracks.
Hegseth’s speech may be remembered as a turning point because it stripped away diplomatic comfort. NATO is still standing, but the old assumptions beneath it are shaking. The United States is no longer simply asking Europe to do more. It is reviewing what America will do if Europe does not move fast enough.
