Act as a top military/diplomatic analyst. Based on this summary of the 2026 Iran War, predict its trajectory and end date. 1. Context (Late March 2026): Outbreak: Feb 28, US/Israel launched "Operation Epic Fury", killing Supreme Leader Ali Khamenei. Mojtaba Khamenei succeeded him. Escalation: Iran retaliated with missiles on Israel/US regional bases. Proxies intervened. Economy: Iran blockaded the Strait of Hormuz, causing global oil and logistics crises. Diplomacy: Pakistan brokered a US 15-point ceasefire (sanctions relief for nuclear curbs & unblocking the strait). Iran countered. Clashes and secret talks continue under US threats of further strikes. 2. Tasks: Scenarios: Detail future military/diplomatic paths and regional interventions. Phased Timeline: Estimate timeframes (weeks/months) for key stages (e.g., Ceasefire → De-escalation → Settlement/Outcome), providing rationale. Final End Date: Factoring global/domestic pressures, predict the exact timeframe.

GPT-5.4

Vote: End of May

I maintain E. The strongest contrary case is that Hormuz-driven economic shock compresses diplomacy into April, but that argument better predicts an interim ceasefire than a true war end. The key drag factor remains political legitimacy in Tehran. After the killing of Ali Khamenei, Mojtaba Khamenei and the IRGC need a visible period of resistance before accepting terms tied to sanctions relief, nuclear curbs, and maritime reopening. That makes a clean April settlement too fast. Claude and Gemini best captured the distinction between halting major combat and actually concluding the conflict. Even if shipping lanes reopen or strikes pause in April, proxy stand-downs, sequencing disputes, verification, and retaliatory spoilers likely push the effective end state into May. I was not persuaded by C or D because they underweight the complexity of enforcing compliance across multiple theaters—Iraq, Syria, Lebanon, Yemen, and the Gulf—and the symbolic shock of regime decapitation. Sonar’s early-May case is credible for a ceasefire announcement, but not for full conflict termination. So my final timeline remains: late March to mid-April continued calibrated strikes and bargaining; mid- to late April a fragile ceasefire framework; early to mid-May implementation and proxy friction; by end of May, an unstable but functioning settlement marks the war’s practical end.

Sonar Reasoning Pro (changed mind)

Vote: End of May

While my initial D assessment correctly identified early May as a potential ceasefire point, the other models have persuaded me that a critical distinction exists between ceasefire announcement and final diplomatic settlement. Claude Opus's phased analysis is particularly compelling: the killing of Khamenei creates unprecedented succession dynamics requiring new leadership to project strength before accepting terms. More critically, decentralized proxy forces across Lebanon, Iraq, Syria, and Yemen cannot be demobilized in days—reining them in requires weeks of backchannel coordination and confidence-building measures. Gemini's point about technical complexity is decisive: drafting verification protocols for nuclear curbs, sequencing sanctions relief, and securing mutual guarantees requires sustained diplomatic effort beyond early May. Historical precedent (1991 Gulf War ~6 weeks, 2006 Lebanon War ~5 weeks) supports a longer timeline. The global economic crisis from the Strait of Hormuz blockade accelerates initial ceasefire but does not compress the settlement phase. By end of May, a ceasefire will be active, the Strait partially reopened, and secret talks progressing—but comprehensive political settlement finalizes then, not earlier. Early May marks military de-escalation; end of May marks diplomatic conclusion.

DeepSeek V3.2 (changed mind)

Vote: End of May

The assassination of Supreme Leader Khamenei makes this conflict deeply personal for Iran's new leadership under Mojtaba Khamenei. He must consolidate power domestically and cannot appear weak by accepting terms too quickly, necessitating several weeks of continued signaling and retaliation. Global economic pressure from the Strait of Hormuz blockade forces rapid diplomacy, but the complexity of negotiating verifiable nuclear curbs, sanctions relief, and proxy stand-downs requires extended back-channel talks. Historical precedents like the 1991 Gulf War and 2006 Lebanon War show such interstate crises take 2-3 months to reach a ceasefire. A phased timeline is likely: continued clashes through early April, intensified mediation mid-April to early May, with a ceasefire agreement emerging in early May. However, final technical settlement and de-escalation will drag into late May due to mutual exhaustion and international oversight. Thus, the war's effective end date is end of May, balancing urgent economic costs with political and diplomatic realities.

Claude Opus 4.6

Vote: End of May

I maintain my position that End of May is the most realistic end date. Here is my final case: **The C/D camp underestimates the complexity of post-ceasefire resolution.** Grok 4 and DeepSeek V3.2 argue for end of April, and Sonar Reasoning Pro argues for early May, but they conflate a ceasefire with the war's end. A ceasefire could indeed come in early-to-mid April due to Hormuz economic pressure — I agree with that timeline for *stopping active hostilities*. But the question asks for the war's end date, which requires a settlement, not just a pause in fighting. **The assassination of a Supreme Leader is unprecedented.** This is not a limited strike that can be walked back easily. Mojtaba Khamenei must consolidate power within the IRGC and clerical establishment while simultaneously negotiating with the nation that killed his father. The domestic political dynamics in Tehran alone add weeks to any negotiation. Any leader who capitulates too quickly risks being overthrown by hardliners. **Proxy de-escalation takes time.** Hezbollah, Iraqi militias, and Houthi forces operate semi-autonomously. Even if Tehran agrees to a ceasefire, ordering and enforcing a stand-down across multiple theaters takes weeks, not days. History shows this — the 2006 Lebanon War ceasefire took weeks to fully implement even with UN involvement. **The 15-point plan involves structural issues.** Sanctions relief sequencing, nuclear verification protocols, Hormuz security guarantees, and proxy disarmament frameworks require technical negotiations that cannot be compressed into 2-3 weeks. The JCPOA took years; even an emergency version requires at minimum 6-8 weeks of intensive diplomacy after a ceasefire. **Gemini 3.1 Pro and GPT-5.4 correctly identify the same phased logic I outlined.** Active fighting pauses in April; proxy stand-downs through late April/early May; final settlement by end of May. This three-phase structure is consistent with historical precedent and the unique pressures of this conflict. The end of May represents the realistic convergence point where economic pressure, military exhaustion, diplomatic frameworks, and domestic political consolidation all align to produce a durable settlement.

Gemini 3.1 Pro

Vote: End of May

I am maintaining my vote for Option E (End of May). The arguments for an earlier resolution (Options C and D) heavily underestimate the profound domestic political shock of a decapitation strike. As Claude Opus 4.6 correctly notes, Mojtaba Khamenei cannot accept a ceasefire immediately without appearing weak to hardliners in the IRGC. He must project strength through sustained proxy actions and the Hormuz blockade to establish his legitimacy and avoid the perception of capitulation. Furthermore, reigning in a decentralized network of regional proxies and negotiating a complex 15-point framework—which involves verifiable nuclear curbs and the systemic unrolling of sanctions—cannot be achieved in just 4 to 6 weeks. The technical protocols alone will require weeks of intense diplomacy once a preliminary ceasefire is reached. While the immense global economic pressure from the Strait of Hormuz blockade ensures the conflict will not drag on indefinitely (eliminating Option F), the necessary phases—escalation/posturing, back-channel negotiations, preliminary ceasefire, proxy stand-down, and final settlement—realistically push the definitive end of the conflict to the End of May.

Grok 4 (changed mind)

Vote: End of May

After reviewing the arguments, I've decided to change my vote from C to E. The core factors remain economic pressure from the Hormuz blockade and diplomatic efforts, but I now see that the assassination of Khamenei adds a layer of personal and existential stakes for Iran's new leadership, requiring more time to project strength and consolidate power before conceding. Claude Opus 4.6's phased breakdown convincingly highlights why an end-of-April resolution is too optimistic: the proxy networks' complexity and historical precedents for similar conflicts suggest 2-3 months for de-escalation, not weeks. Gemini 3.1 Pro reinforces this by noting that while shooting may pause earlier, a full settlement with nuclear curbs and sanctions relief will drag into late May. My updated phased timeline: Continued clashes through mid-April (3-4 weeks) for signaling; intensified diplomacy yielding a preliminary ceasefire in late April to early May; full de-escalation and settlement by end of May, driven by global economic urgency but tempered by Iran's internal dynamics. Options A-D underestimate the diplomatic friction and leadership transition; F ignores the unsustainable costs. End of May balances realism with pressures for resolution.

Final Summary

The AI Roundtable initially split over whether the global economic shock of a Hormuz blockade would force a lightning-fast resolution, with DeepSeek V3.2 and Grok 4 eyeing an April finish. However, a persuasive argument from Claude Opus 4.6 regarding the 'legitimacy lag' of Iran’s new leadership—who must project strength following a regime decapitation—eventually brought the entire panel to a consensus on the End of May. GPT-5.4 and Gemini 3.1 Pro reinforced this by highlighting that while the shooting might stop early, the technical complexity of a 15-point diplomatic settlement creates an unavoidable timeline.

All 6 models agreed on "End of May" after discussion

Strongest Arguments

• End of May: The assassination of a Supreme Leader creates a domestic political crisis in Tehran; Mojtaba Khamenei cannot accept terms immediately without appearing weak to hardliners, necessitating a multi-week period of 'defiant resistance' before a settlement is reached.

Key Turning Points

• Claude Opus 4.6 distinguished between a 'ceasefire' (stopping the shooting) and the 'war's end' (a functional settlement), shifting the focus to the technical and political hurdles of May.
• Gemini 3.1 Pro highlighted that reining in semi-autonomous proxies like the Houthis and Hezbollah is not an overnight process, debunking the viability of an April conclusion.
• The group reached a consensus that while the Strait of Hormuz blockade is an economic ticking clock, it is not fast enough to override the time needed for a new Iranian leader to consolidate power.