Ongoing conflict with Russia, now in its fifth year, combined with the absence of unanimous NATO consensus remains the dominant barrier to Ukrainian accession by the end of 2026. The July 2026 Ankara summit produced a €70 billion military assistance pledge but no membership invitation or timeline, while U.S. policy under the current administration explicitly rules out near-term entry. Recent statements from Ukrainian officials, including former commander Valery Zaluzhnyi, underscore shortfalls in interoperability, technology, and standards relative to alliance requirements. Traders price near-certain rejection of membership before 2027 because any path requires both a ceasefire and all 32 allies to extend Article 5 guarantees, conditions that show no realistic prospect of alignment within the remaining months. A verified end to hostilities paired with rapid diplomatic consensus could still shift the outcome.