As of November 3, 2026, Polymarket prices “Will any country leave NATO by December 31, 2026?” at 7% YES with $413K traded. No tracked wallet holds a position on this market, so there is no verdict.
NATO has no formal exit mechanism and no member has ever left, making a departure by December 31, 2026 unlikely.
The question of whether any country leave NATO before December 31, 2026 has gained renewed attention after Danish Prime Minister Mette Frederiksen warned in January that a U.S. takeover of Greenland would mark "the end of NATO," following President Donald Trump's renewed threats to annex the territory. The dispute pits the alliance's most powerful member against a founding ally, raising questions about Article 5 cohesion and whether such ruptures could prompt a member to exit. NATO's own membership data shows its international staff headcount at 6,793, down 23.6% year-on-year, reflecting ongoing restructuring at its Brussels headquarters. [PBS News, Jan 12]
Structural pressures are mounting beyond the Greenland dispute. The Carnegie Endowment reported in March that elections across Europe—in Hungary, Latvia, and Sweden in 2026 and France and Italy in 2027—will be exploited by the Kremlin to sow divisions and support parties skeptical of confronting Russia. Meanwhile, the United States is withdrawing from UNESCO effective December 31, 2026, part of a broader review of multilateral commitments that analysts say could embolden debates over alliance burdens. Whether any country leave NATO remains a tail risk, but the combination of territorial disputes and electoral volatility has kept the scenario in focus. [Carnegie Endowment, Mar 19]
Diplomatic attention is also fixed on leadership transitions: UN Secretary-General António Guterres' second term ends December 31, 2026, with no clear successor agreed, and the Middle East Forum has argued that no Turkish candidate should lead international organizations until Cyprus's occupation ends—a stance highlighting lingering intra-alliance tensions between Greece and Turkey. NATO's founding treaty contains no formal expulsion mechanism, meaning any exit would be voluntary and require domestic political consensus. The decisive factor will be whether member governments facing 2026–2027 elections translate skepticism into formal withdrawal proceedings before the deadline. [Middle East Forum, Oct 31]
None of the 166 tracked wallets holds a position here, so the Radar makes no call — price, volume and news above are live. When a tracked wallet takes a position, this page gets a verdict.
See the markets with a verdict →