The Trump administration has pursued a deliberate reduction in U.S. military commitments to NATO through announced troop drawdowns of roughly 9,000–13,000 personnel from Europe since late 2025, alongside scaled-back assignment of fighter jets, bombers, tankers, submarines, and carrier support for alliance contingencies. These steps followed European reluctance to assist fully in U.S. and Israeli operations against Iran, prompting public statements from President Trump about reconsidering alliance membership. Formal withdrawal remains constrained by 2023–2024 legislation requiring two-thirds Senate consent or congressional action, while additional statutory floors limit further reductions below approximately 76,000 troops without certification. NATO leaders have responded by accelerating European defense spending targets and contingency planning, though U.S. nuclear posture in Europe has stayed unchanged. Upcoming NATO summits and congressional oversight hearings on force posture reviews represent near-term milestones that could influence any further decoupling.