**Traders assign a 92.8% probability to “No” on NATO Article 5 invocation before 2027 because no armed attack meeting the treaty threshold has occurred on alliance territory and the remaining months of 2026 offer limited scope for one to materialize.** Russia has escalated hybrid and gray-zone activity, including drone incursions over Poland and a failed explosive-drone incident at Germany’s Leipzig/Halle Airport in August 2026 that German officials attributed to Russian operatives. NATO and EU leaders condemned these actions and invoked Article 4 consultations, but treated them as sabotage rather than an Article 5 trigger. The July 2026 Ankara summit produced a formal reaffirmation of the collective-defense commitment by all 32 allies, including the United States, while European members continue raising defense spending and forward deployments on the eastern flank. US intelligence assessments flag the possibility of limited Russian probes in the Baltics or elsewhere, yet these remain speculative and would still require rapid consensus on attribution and response. With only four months left in 2026 and no conventional cross-border assault under way, the market reflects the view that the current pattern of sub-threshold pressure is unlikely to produce the unambiguous armed attack needed to activate Article 5.