This market will resolve to “Yes” if Ukraine signs any written instrument (e.g., treaty, ceasefire/armistice, framework/“roadmap,” exchange of letters, or mediated agreement text) that: (i) includes both Ukraine and the Russian Federation as parties, and (ii) either ends hostilities/establishes a ceasefire or commits both sides to a defined process toward ending the war (i.e., stated objective of peace/normalization plus principles, steps, and/or a timetable) by October 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to “No”.