President Donald Trump has issued a definitive threat to pull the United States out of NATO, declaring the matter is now beyond reconsideration as the month-long US-Israeli war in Iran fractures the transatlantic alliance.
Speaking to reporters, Trump stated he is absolutely considering a formal withdrawal from the security pact. The severe diplomatic escalation is a direct retaliation against European nations that have refused to join the military campaign against Tehran. Spain recently closed its airspace to US planes and denied the use of jointly operated bases. Trump also directly criticized UK Prime Minister Keir Starmer for hesitating to deploy an aircraft carrier to the region.
The geopolitical standoff reached a new phase Wednesday evening during a primetime national address. Trump claimed the Middle East conflict is nearing completion and projected the US military could transition to offshore localized strikes within three weeks. The conflict has already caused massive global economic fallout, including surging fertilizer and oil prices following Tehran’s closure of the Strait of Hormuz.
Former officials are categorizing the rupture as an unprecedented structural crisis. Ivo Daalder, the former US permanent representative to NATO, labeled the situation the worst crisis the alliance has ever confronted, according to a detailed report released this week. Daalder warned that the foundational trust established by the 1949 Washington Treaty has already been shattered by the rhetoric.
NATO Secretary General Mark Rutte has voiced support for the Iran campaign to maintain relations with the US administration. He faces stark internal division, as almost all other 31 member states remain opposed to the war. A formal US exit faces massive legal roadblocks. Congress passed the National Defense Authorization Act in 2024, which explicitly prohibits a president from unilaterally withdrawing without an act of Congress or two-thirds Senate approval. Secretary of State Marco Rubio, who originally co-sponsored that exact legislative provision, is now echoing the president’s threats. Rubio stated the US must re-examine its relationship with the alliance, accusing European allies of treating the security pact as a one-way street.
The De Facto Withdrawal Strategy and European Defense Shifts
Geopolitical experts warn that a formal treaty exit may not be necessary for the administration to dismantle the alliance. Even if the Supreme Court or Congress successfully blocks a legal withdrawal, the US can execute a de facto exit strategy. By pulling American personnel out of the joint NATO command structure and ignoring Article 5 collective defense obligations, the administration can effectively end the transatlantic security umbrella without a formal declaration.
This marks a historic paradigm shift in US foreign policy. It is the first time since NATO’s inception in 1949 that a sitting US president has leveraged an active, unilateral conflict as an absolute loyalty test for member states. The strategy places immense operational pressure on European capitals, forcing allied nations to rapidly confront a future where continental defense planning must operate entirely independent of Washington’s military infrastructure.