President Trump’s renewed criticism of NATO allies following limited European support in the 2026 Iran conflict has intensified debate over U.S. commitment, with administration officials signaling reviews of force posture, troop levels, and alliance contributions. Recent steps include announced withdrawals of thousands of U.S. personnel from Germany, reductions in fighter jets, surveillance aircraft, and naval assets allocated to NATO, plus shifts of certain commands to European officers. However, a 2023 statute requires congressional approval for treaty withdrawal, prompting bipartisan legislation to reinforce that check, while senior officials have stated there are no current plans to exit the alliance outright. Market pricing likely reflects these tensions between rhetorical pressure for burden-sharing and structural, legal, and political obstacles to formal departure.