The North Atlantic Treaty Organization marked its 75th anniversary at a Washington summit that reflected both the alliance's remarkable resilience and the genuinely unprecedented threats it faces. NATO has grown from 12 founding members to 32, now spanning North America and virtually all of Europe, with total defense spending of $1.4 trillion annually.
The American commitment to NATO remains the cornerstone of the alliance's credibility. The US contributes approximately 70% of NATO's total defense spending and provides unique capabilities β nuclear deterrence, satellite intelligence, long-range strike, and advanced air and missile defense β that European allies cannot replicate. The debate about "burden sharing" that dominated Trump-era NATO meetings has been partially resolved by a genuine surge in European defense spending, with 23 of 32 members now meeting the 2% of GDP target.
Russia's invasion of Ukraine has been NATO's most clarifying event since its founding. The invasion demonstrated that conventional land warfare on European soil is not a Cold War artifact, that US-provided weapons systems and intelligence are decisive military factors, and that energy dependence on adversaries creates dangerous political vulnerabilities.
New domains β cyber, space, and AI β have been formally integrated into NATO's collective defense commitments for the first time. A cyberattack on a member's critical infrastructure is now explicitly treated as potentially triggering Article 5, the mutual defense clause.
