NATO’s Article 5 collective-defense clause has not been invoked since 2001, and recent developments continue to support trader expectations that it will remain untriggered through 2026. Russia has intensified hybrid operations—including drone incursions, sabotage, cyberattacks, and airspace violations—against NATO members, yet these actions have stayed below the threshold for a formal armed attack on alliance territory. NATO leaders, including Secretary General Mark Rutte and Supreme Allied Commander Gen. Alexus Grynkewich, have emphasized deliberate ambiguity around invocation criteria, rapid response options short of Article 5, and military readiness to deter conventional aggression. European officials describe the risk of a limited Russian strike as low but growing, while alliance planning and public statements focus on blocking and blunting any future assault rather than signaling imminent collective-defense activation. No scheduled events or verified escalations in the coming months alter this positioning.