Ukraine's constitutional commitment to NATO membership, combined with ongoing resistance to Russian demands for permanent neutrality, underpins trader expectations that Kyiv will not accept a formal bar on accession before 2027. Recent statements from U.S. Secretary of State Marco Rubio emphasize that alliance expansion remains off the agenda amid efforts to negotiate an end to hostilities, with proposed trilateral technical talks by late October 2026 focusing instead on ceasefires, energy security, and alternative guarantees. Ukraine has signaled openness to bilateral or multilateral security arrangements resembling Article 5 protections, yet no verified agreement on NATO restrictions has emerged despite months of diplomatic activity. Battlefield trends, the absence of unanimous NATO consensus, and Ukraine's insistence on credible assurances continue to sustain the current pricing, though a rapid breakthrough in U.S.-brokered negotiations or shifts in territorial control could still alter the trajectory within the narrow window.