Traders assign a 92.8% probability that NATO will not invoke Article 5 before 2027, reflecting sustained deterrence and the absence of a qualifying armed attack on alliance territory. Russian hybrid actions, including repeated drone incursions over Poland and Estonia plus airspace violations, prompted Article 4 consultations and enhanced eastern flank measures such as Operation Eastern Sentry, but fell short of triggering collective defense obligations. NATO’s July 2026 Ankara summit produced a formal reaffirmation of the “an attack on one is an attack on all” commitment alongside continued support for Ukraine, while U.S. statements and force posture adjustments have introduced uncertainty without altering the consensus against near-term escalation. No NATO member has faced an unambiguous military strike since 2001, and ongoing diplomatic warnings plus European defense spending increases have reinforced the prevailing assessment that the threshold for invocation remains distant through 2026.