Recent U.S. intelligence assessments indicate Russian President Putin may probe NATO resolve through limited hybrid or cyber actions on the eastern flank between fall 2026 and 2029, though the odds of a full-scale land incursion capable of triggering Article 5 remain low in the immediate term. NATO allies reaffirmed their ironclad commitment to collective defense at the July 2026 Ankara summit, while the U.S. administration advances a shift toward greater European responsibility for conventional defense by 2027 amid ongoing troop posture reviews. No verified armed attack on alliance territory has occurred since the Ukraine conflict's continuation, supporting trader consensus that invocation before 2027 stays improbable absent major escalation.