Trump issues NATO ultimatum tying defense funding to 4% of GDP

President Trump demanded NATO allies raise defense spending to 4% of GDP, double the existing 2% target, framing non-compliance as grounds for the U.S. to reconsider Article 5 collective defense commitments. Secretary of State Marco Rubio delivered the ultimatum at NATO headquarters, warning that allies not meeting the threshold by 2028 would face reduced American military cooperation. European allies pushed back, arguing Article 3 self-defense obligations do not carry a spending floor.