The United States has maintained a voluntary moratorium on nuclear explosive testing since its last underground detonation in 1992 at the Nevada National Security Site, relying instead on the science-based Stockpile Stewardship Program to ensure warhead reliability without live tests. No notable developments have occurred in the past 30 days to alter this stance, amid ongoing geopolitical tensions including U.S. conventional strikes on Iranian nuclear facilities in early March and accusations from China over arms control uncertainty. Discussions on resuming testing, raised in late 2025 under President Trump, have not advanced to announcements or preparations, with Russia signaling reciprocal measures if breached. Traders should monitor congressional hearings on the Comprehensive Nuclear-Test-Ban Treaty ratification and Department of Energy budget debates for potential policy shifts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedU.S. nuclear test by...?
U.S. nuclear test by...?
$640,658 Vol.
June 30, 2026
2%
September 30, 2026
6%
December 31, 2026
13%
$640,658 Vol.
June 30, 2026
2%
September 30, 2026
6%
December 31, 2026
13%
A nuclear test is defined as the intentional non-combat detonation of a device by the US 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 US may still qualify if a clear consensus of credible reporting attributes the nuclear detonation to US. For example, an unclaimed nuclear test analogous to the 1979 "Vela Incident" would count if credible reporting attributes it to the US.
The resolution source for this market will be a broad consensus of credible reporting.
Market Opened: Mar 31, 2026, 3:32 PM ET
Resolver
0x65070BE91...A nuclear test is defined as the intentional non-combat detonation of a device by the US 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 US may still qualify if a clear consensus of credible reporting attributes the nuclear detonation to US. For example, an unclaimed nuclear test analogous to the 1979 "Vela Incident" would count if credible reporting attributes it to the US.
The resolution source for this market will be a broad consensus of credible reporting.
Resolver
0x65070BE91...The United States has maintained a voluntary moratorium on nuclear explosive testing since its last underground detonation in 1992 at the Nevada National Security Site, relying instead on the science-based Stockpile Stewardship Program to ensure warhead reliability without live tests. No notable developments have occurred in the past 30 days to alter this stance, amid ongoing geopolitical tensions including U.S. conventional strikes on Iranian nuclear facilities in early March and accusations from China over arms control uncertainty. Discussions on resuming testing, raised in late 2025 under President Trump, have not advanced to announcements or preparations, with Russia signaling reciprocal measures if breached. Traders should monitor congressional hearings on the Comprehensive Nuclear-Test-Ban Treaty ratification and Department of Energy budget debates for potential policy shifts.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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