Russia’s ongoing hybrid operations against NATO members—including repeated drone incursions into Poland, Romania, and Moldova, sabotage attempts, and undersea cable damage—have remained below the threshold for Article 5 invocation, with alliance leaders emphasizing deliberate ambiguity around triggers and sufficient response options short of collective defense. NATO has reaffirmed its eastern flank plans and deterrence posture at recent summits while noting that clear armed attacks on member territory would prompt consultations, yet no such unambiguous strike has occurred amid the Ukraine conflict or Middle East tensions. Warnings of potential Russian tests in 2027 reflect longer-term concerns over readiness gaps, but the current absence of direct kinetic escalation on alliance soil supports trader expectations that Article 5 will not activate before the end of 2026.