Stalled Russia-Ukraine diplomacy and Russian battlefield advances in Donbas have produced near-certain trader consensus against a Ukrainian peace referendum passing before 2027. Kremlin statements in late August 2026 placed talks on a “deep pause,” with Moscow conditioning any ceasefire on full Ukrainian withdrawal from remaining Donetsk territory while rejecting proposals centered on current front lines and security guarantees. Ukrainian officials anticipate only technical discussions and continued fighting through winter, following earlier 2026 trilateral meetings that yielded solely prisoner exchanges. Constitutional requirements add further barriers: any territorial referendum demands prior parliamentary action, Constitutional Court review, a sustained ceasefire, and voter safety standards that cannot be met under active martial law within the remaining months. Realistic shifts could still arise from an abrupt U.S.-mediated breakthrough or rapid battlefield reversal that compels both sides to finalize an agreement text before year-end.