The United States has reduced its Brigade Combat Teams (BCTs) stationed in Europe from four to three, returning deployments to their 2021 levels as Washington intensifies pressure on European allies to take greater responsibility for their own defence. The Pentagon confirmed the move in a formal statement, noting that each BCT consists of between 4,000 and 4,700 personnel. The reduction is being carried out by cancelling planned deployments rather than withdrawing forces already stationed on the continent.

The most immediate effect is a halt to the deployment of the Army's 2nd Armored Brigade Combat Team, 1st Cavalry Division to Poland. US Vice President JD Vance had earlier described the move as a delay rather than a cancellation. However, the timing proved disruptive: approximately 1,000 soldiers and 1,700 pieces of equipment from that brigade had already arrived in Europe before the order was reversed. Separately, the deployment to Germany of personnel trained to operate long-range rocket and missile systems has also been suspended, as part of a broader drawdown of around 5,000 troops announced earlier this month.

The cancellation has created knock-on concerns along NATO's eastern flank, particularly in the Baltic states — Estonia, Latvia and Lithuania — which border Russia and had been expecting reinforcements sourced partly from the Poland-bound brigade. Estonia's foreign ministry secretary-general Jonatan Vseviov called the development "a hiccup" but said it would not "collapse NATO deterrence in the Baltic states." Lithuanian Foreign Minister Kęstutis Budrys similarly described the situation as a "technical issue" he hoped would be resolved. US officials said they are examining how to fill any capability gaps using forces already deployed in Europe.

NATO's top military officer, US Lieutenant General Alex Grynkewich, sought to reassure allies meeting at NATO headquarters in Brussels that European security would not be compromised and that no further near-term reductions were expected beyond the 5,000 already announced. He acknowledged, however, that longer-term drawdowns should be anticipated as European nations build up their own military capacity. "It's going to be an ongoing process for several years," he said, adding that Washington would "stay well-synchronized" with allies.

The broader context is one of mounting tension between Washington and its European partners. President Donald Trump has pressed NATO members to spend more on defence and expressed frustration with allies, including Germany, over disagreements related to US involvement in the war with Iran and contributions to a peacekeeping mission in the Strait of Hormuz, the strategically vital waterway connecting the Persian Gulf to the Arabian Sea. Europe's defence spending and strategic autonomy have rarely faced such direct pressure from across the Atlantic.