Trader consensus implies an 84% probability that NATO's Article 5 collective defense clause will not be invoked before 2027, driven by the absence of any armed attack on alliance territory despite persistent Russia-Ukraine war spillover risks. Recent hybrid threats—Russian drone incursions, sabotage in Poland and the Baltics—remain below the treaty's "armed attack" threshold requiring unanimous consensus for activation, as NATO's chief dismissed Article 5 applicability to a March ballistic missile near Turkey. US administration rhetoric, including Pentagon statements deferring commitments to presidential discretion and Trump warnings on burden-sharing, has fueled doubts about deterrence without catalyzing escalation; military leaders assess potential Russian tests of the eastern flank by 2029, post-market resolution.