US Secretary of State Marco Rubio stated in early October 2026 that Ukraine’s NATO membership is not on the agenda, with Washington prioritizing an end to the Russia-Ukraine conflict over alliance expansion. NATO accession demands unanimous consent from all 32 members, a formal invitation, and sustained reforms amid an active war, factors that have stalled progress despite prior summit pledges. Recent reports also indicate Ukraine may consider constitutional adjustments to de-emphasize membership ambitions in favor of EU integration. Trader consensus at 98.5% probability for no accession before 2027 reflects these structural barriers and diplomatic signals. Late resolution could still hinge on an unforeseen ceasefire enabling accelerated talks or shifts in key member positions within the narrow remaining window.