NATO allies continue to describe Ukraine’s path to membership as irreversible following the 2026 Ankara summit, yet any accession requires unanimous consent from all 32 members plus resolution of core conditions including the active conflict with Russia. Recent statements from Ukrainian officials, including former commander Valerii Zaluzhnyi, have underscored structural incompatibilities and the absence of a near-term timeline, while major allies remain unwilling to extend security guarantees to a country engaged in hostilities with a nuclear power. These political and procedural barriers sustain the market’s 96.7% implied probability for no accession before 2027. Late developments such as a rapid ceasefire enabling swift ratification or an unexpected consensus shift among holdout members represent the primary scenarios that could still alter the outcome.