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Will Russia test a nuclear weapon by December 31 2026?

6%chance, according to the market

Backed by $19K traded in the last 24 hours — this is a price people are staking money on, not a forecast.

How the price has moved

On Aug 4 the market put this at 10%.

Aug 4now 6%

How this resolves

The rules below decide who gets paid. Read them before the price — most surprises are definitional, not predictive.

This market will resolve to "Yes" if Russia conducts a nuclear test by the listed date (ET). Otherwise, this market will resolve to "No". A nuclear test is defined as the intentional non-combat detonation of a device by Russia that produces a nuclear chain reaction (fission or fusion), regardless of yield. Accidents, radiological dispersal devices (bombs that spread radioactive material using conventional explosives such as "dirty bombs"), or actions by third parties will not count toward this market's resolution. Tests not explicitly claimed by Russia may still qualify if a clear consensus of credible reporting attributes the nuclear detonation to Russia. For example, an unclaimed nuclear test analogous to the 1979 "Vela Incident" would count if credible reporting attributes it to Russia. The resolution source for this market will be a broad consensus of credible reporting.

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Price as of 2026-08-18 10:01 UTC · Source: Polymarket