Will a US ally get a nuke before 2027?: how this market works

What you need to know

This market asks whether any close US ally will go from having zero nuclear weapons to openly possessing one before the end of 2026. A Yes would mean a country like South Korea, Japan, Germany, or another NATO or Major Non-NATO Ally publicly confirmed it built or acquired a nuclear weapon and controls it independently. A No means no such country crosses that line in time. The key word is 'new': countries already known to have nukes, like the UK or France, do not count. The market settles Yes only if a confirmed, credible source, such as an international nuclear agency, the country's own government, or a clear consensus of major news outlets, officially reports that a qualifying ally now independently controls an operational nuclear weapon before December 31, 2026. Two important exceptions: a country hosting US nuclear bombs under a sharing deal does not count, and Israel openly admitting to having nukes also does not count, even though Israel is a Major Non-NATO Ally. Only a genuinely new, independently controlled weapon qualifies. No relevant recent news was provided for this market. The kind of development that would matter here is any country formally announcing a nuclear weapons program, withdrawing from the Nuclear Non-Proliferation Treaty, or credible intelligence reports suggesting a secret weapons program nearing completion. The market prices this at around 7%, meaning it is considered very unlikely but not impossible. The honest uncertainty is mostly about tail-risk scenarios: a sudden geopolitical shock, like a security guarantee collapse, could push a country like South Korea to move quickly. Building a working nuclear weapon in under two years is also technically very difficult. The main question is less 'which side is right' and more 'could something truly unexpected happen in a short window', and the market currently says probably not.

The odds right now

• Will a US ally get a nuke before 2027?-0.1 pts (1w)7%

Price history

How this resolves

Resolves December 31, 2026

This market will resolve to "Yes" if credible reports from international nuclear agencies, a claimant government, or a consensus of credible global news sources officially confirm that a US ally which did not possess nuclear weapons as of November 12, 2025, possesses a nuclear weapon by December 31, 2026, 11:59 PM ET. If a US ally participates in a nuclear sharing agreement that does not include independent control over nuclear weapons, this will not qualify for "Yes" resolution. Read the full resolution rules on the live market page.

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