The sustained absence of direct military attacks on NATO member territory amid the ongoing Russia-Ukraine conflict remains the dominant driver behind the 95% trader consensus against Article 5 invocation before 2027. Diplomatic channels, alliance deterrence measures, and contained escalation in Eastern Europe have kept collective defense obligations from activating despite prolonged hostilities. High implied probability reflects historical precedent where Article 5 has been triggered only once, combined with current intelligence assessments showing limited risk of spillover to alliance soil. Realistic shifts could still arise from sudden border incidents involving Baltic states, major terrorist strikes on members, or abrupt policy changes by key allies, though such events appear low-probability within the resolution window.