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
15.0%
model
Market probability
16.5%
quote, Stage B
Estimated edge
-1.5 pts
M/ARC
Decision
PASS
M/ARC
Model confidence
50.0%
model
Evidence quality
Moderate · 0.72
source quality
Identifiability
Strong · 1.00
event coverage
Coherence
Unconstrained
related markets
Forecast confidence
50.0%
M/ARC combination
Status
recorded
record
Base-rate reason
There is no clear historical base rate for U.S. invasions of countries similar to Iran within the specified timeframe, making it difficult to establish a reference-class base rate.
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
Evidence citations
E1, E2, E3, E4
Why M/ARC differs
The estimate reflects a low probability of invasion based on current geopolitical tensions and military activities, but the lack of direct evidence or strong indicators of an invasion leads to a modest probability. The confidence is moderate due to the thin nature of the evidence provided.
Uncertainty
Potential changes in U.S. foreign policy or military strategy before 2027. Unforeseen geopolitical developments that could escalate or de-escalate tensions with Iran.
openai · gpt-4o-mini · forecast-v4 · geopolitics · 9b4bc4f9de4a · 21 Aug 2026, 21:02 UTC
Forecast history
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