This market will resolve to "Yes" if the United States commences a military offensive intended to establish control over any portion of Iran by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No".
For the purposes of this market, land de facto controlled by Iran or the United States as of November 4, 2025 12:00 PM ET, will be considered the sovereign territory of that country.
The resolution source for this market will be a consensus of credible sources.
Source quality is provenance and freshness. Identifiability is whether those sources actually inform this event's outcome split. Coherence is checked separately against related markets.
Evidence timeline
2026-08-20 · Corps of Engineers Modernizes Historic Fort Sill Barracks · Active
2026-08-20 · USS George Washington Celebrates Historic Aircraft Milestone · Active
2026-08-17 · Yemen: Türk alarmed by rising civilian toll, urges restraint · Active
2026-08-14 · Meth trafficking across Middle East becoming more advanced, UNODC warns · Active
E1 · United Nations News · active · suit 0.80 · Aug 14Meth trafficking across Middle East becoming more advanced, UNODC warns · Official geopolitics source with usable freshness.
E2 · United Nations News · active · suit 0.80 · Aug 17Yemen: Türk alarmed by rising civilian toll, urges restraint · Official geopolitics source with usable freshness.
E3 · U.S. Department of Defense · active · suit 0.80 · 13h agoUSS George Washington Celebrates Historic Aircraft Milestone · Official geopolitics source with usable freshness.
E4 · U.S. Department of Defense · active · suit 0.80 · 12h agoCorps of Engineers Modernizes Historic Fort Sill Barracks · Official geopolitics source with usable freshness.
Signals
Interpretations of evidence. Not trade instructions.
geopolitical status
+ moderately escalation
Language is consistent with escalation. This is a text heuristic, not a verified military assessment.
M/ARC Analysis
Research classification only. Does not place paper trades. Independent probability and model confidence come from the model. Edge, decision, evidence quality, identifiability, coherence, and combined confidence are M/ARC calculations. These scores are not statistically calibrated.
Independent probability
25.0%
model
Market probability
16.5%
quote, Stage B
Estimated edge
+8.5 pts
M/ARC
Decision
ATTENTION
M/ARC
Model confidence
60.0%
model
Evidence quality
Moderate · 0.72
source quality
Identifiability
Strong · 1.00
event coverage
Coherence
Unconstrained
related markets
Forecast confidence
60.0%
M/ARC combination
Status
recorded
record
Base-rate reason
There is no established base rate for U.S. invasions of Iran, as such actions are rare and context-dependent. The geopolitical landscape is complex, and historical precedents do not provide a clear predictive framework for this specific question.
E5 · PARALLAX market record · contextual · suit 0.25 · 2026-12-31Listed category · Market text describes the question; it does not identify the outcome.
E6 · PARALLAX market record · contextual · suit 0.25 · 2026-12-31Scheduled close · Market text describes the question; it does not identify the outcome.
E7 · PARALLAX market record · contextual · suit 0.25 · 2026-12-31Event context · Market text describes the question; it does not identify the outcome.
E8 · PARALLAX market record · contextual · suit 0.25 · 2026-12-31Market question · Market text describes the question; it does not identify the outcome.
E9 · PARALLAX market record · contextual · suit 0.25 · 2026-12-31Resolution criteria · Market text describes the question; it does not identify the outcome.
E10 · PARALLAX market record · contextual · suit 0.25 · 2026-12-31Resolution source · Market text describes the question; it does not identify the outcome.
Provider issues: geopolitics: U.S. Department of State: U.S. Department of State feed returned no parseable items
evidence-v2 · 9b4bc4f9de4a
Adjustments
Active evidence suggests escalating tensions in the region, particularly related to Iran and U.S. interests, but does not provide direct evidence of an impending invasion.
Evidence citations
E1, E2, E3, E4
Why M/ARC differs
Given the current geopolitical tensions and the nature of the evidence, I estimate a 25% probability of the U.S. invading Iran before 2027. This estimate reflects the active evidence of escalation but acknowledges the lack of direct military indicators. The confidence is moderate due to the nature of the evidence being more suggestive than definitive.
Uncertainty
Potential for diplomatic resolutions that could de-escalate tensions before 2027. Unpredictable changes in U.S. foreign policy or military strategy. The influence of external factors such as other regional conflicts or international relations.
openai · gpt-4o-mini · forecast-v4 · geopolitics · 9b4bc4f9de4a · 21 Aug 2026, 22:33 UTC
Forecast history
21 Aug 2026, 22:33 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 22:33 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 21:32 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 21:32 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 21:02 UTC · 15.0% · PASS · forecast-v4
21 Aug 2026, 21:02 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 20:33 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 20:33 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 17:01 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 17:00 UTC · 3.0% · ATTENTION · forecast-v2
21 Aug 2026, 14:00 UTC · 15.0% · PASS · forecast-v4
21 Aug 2026, 14:00 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 13:30 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 13:30 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 12:32 UTC · 15.0% · PASS · forecast-v4
21 Aug 2026, 12:32 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 12:02 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 12:02 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 11:32 UTC · 15.0% · PASS · forecast-v4
21 Aug 2026, 11:32 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 11:03 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 11:02 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 10:32 UTC · 15.0% · PASS · forecast-v4
21 Aug 2026, 10:32 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 09:01 UTC · 15.0% · PASS · forecast-v4
21 Aug 2026, 09:01 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 08:31 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 08:31 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 08:02 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 08:02 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 07:30 UTC · 25.0% · ATTENTION · forecast-v4
21 Aug 2026, 07:30 UTC · 5.0% · ATTENTION · forecast-v2
21 Aug 2026, 06:31 UTC · 15.0% · PASS · forecast-v4
21 Aug 2026, 06:31 UTC · 3.0% · ATTENTION · forecast-v2
18 Aug 2026, 19:59 UTC · 15.0% · PASS · forecast-v4
18 Aug 2026, 18:21 UTC · 15.0% · PASS · forecast-v3-joint
18 Aug 2026, 17:53 UTC · 15.0% · PASS · forecast-v3
18 Aug 2026, 16:47 UTC · 5.0% · ATTENTION · forecast-v2
18 Aug 2026, 16:12 UTC · 10.0% · ATTENTION · forecast-v1