Ukraine joins NATO before 2027?

If Ukraine has officially joined NATO as a full member state at any point by December 31, 2026, 11:59 PM ET this market will resolve to “Yes”. Otherwise, this market will resolve to "No." The primary settlement source for this market will be the official NATO website (https://www.nato.int/cps/en/natohq/nato_countries.htm), however other credible sources may be used.

Source: official resolution criteria from Polymarket. Always verify on the source page before trading.