# Will the ceasefire between Iran and the United States continue to hold 7 days from today?

Canonical URL: https://preseen.com/reports/a9270d57-10ec-46de-960e-56ddab0be8ce/will-the-ceasefire-between-iran-and-the-united-states-continue-to-hold-7-days-fr
Markdown URL: https://preseen.com/reports/a9270d57-10ec-46de-960e-56ddab0be8ce/markdown

## Forecast

P(Yes): 82.4%; P(No): 17.6%.

Generated: June 17, 2026 at 11:10 PM UTC
Forecast model: gpt-5.5
Research model: gpt-5.5

## Analysis

## TL;DR
The U.S.–Iran ceasefire has an 82% chance of still being treated as in effect on June 24, 2026.

## Context
The forecast date is June 17, 2026, and the resolution date is June 24, 2026. The latest same-day status is positive: Axios reported at 21:34 UTC that the U.S. and Iran had remotely signed the memorandum of understanding and that the agreement was in effect, while AP’s live coverage said a U.S. official described the signed MOU as final, unchanged since electronic signing, but still reversible during the 60-day final-deal process ([Axios](https://www.axios.com/2026/06/17/iran-deal-signing-text-release); [AP live](https://apnews.com/article/a7ab28d9b34edfaa2061a67616f610bc)).

This question is not asking whether the settlement is durable. It asks whether major reporting says sustained or large-scale direct U.S.–Iran hostilities have resumed by June 24. The MOU text is strong on paper: it declares an immediate termination of military operations, starts a 60-day negotiation window, begins U.S. blockade removal with full completion within 30 days, and asks Iran to restore safe commercial passage through Hormuz over the same 30-day implementation period ([AP transcript](https://apnews.com/article/8576fbe2be1309977e903463fbf57ee6); [Axios text](https://www.axios.com/2026/06/17/read-full-us-iran-deal-memorandum-understanding)).

## Evidence
The historical backbone pushes toward YES. Clayton and Sticher’s study of 231 written civil-war ceasefires from 1990 to 2019 found that, using a 25-battle-death recurrence threshold, 30-day survival was about 85% for cessations of hostilities, 92% for preliminary ceasefires, and 96% for definitive ceasefires; at three months, the same model gave 48%, 70%, and 80% survival ([International Studies Quarterly](https://academic.oup.com/isq/article/65/3/633/6277949)). A flat-hazard conversion from the 30-day numbers, \(S_7=S_{30}^{7/30}\), gives 96%, 98%, and 99% one-week survival. The ETH/PRIO Civil Conflict CeaseFire dataset is broader, with 2,202 ceasefires across 66 countries and 109 civil conflicts from 1989 to 2020, and its data paper reports that failed ceasefires have a median of 65 days to a 25-fatality threshold ([PRIO](https://www.prio.org/publications/13532); [Journal of Conflict Resolution](https://journals.sagepub.com/doi/10.1177/00220027221129183)). This is not a clean interstate reference class, so I use it as an outside-view anchor, not a mechanical answer.

The current case is worse than that outside view because this ceasefire has already tolerated serious direct fire. Reuters reported that the U.S. and Iran traded attacks for a second straight day on June 11, with Trump threatening more strikes if Tehran did not agree to a peace deal ([Reuters via StreetInsider](https://www.streetinsider.com/Reuters/US%2Band%2BIran%2Bexchange%2Bfire%2Bfor%2Ba%2Bsecond%2Bday%2C%2Bundermining%2Bshaky%2Bceasefire/26631474.html)). Reuters also reported on June 12 that U.S. forces shot down multiple Iranian one-way attack drones heading toward the Strait of Hormuz ([Reuters via Investing.com](https://www.investing.com/news/world-news/exclusiveus-forces-shoot-down-iranian-attack-drones-source-says-4740822)). AP reported on June 14 that the U.S. disabled a tanker trying to run the blockade, killing three Indian sailors, after nearly 60 warnings ([AP](https://apnews.com/article/0b193ba0d4fab935db871390227b7d20)). Those events show a real one-week hazard. They also show that major outlets have been willing to call the ceasefire shaky rather than dead.

The MOU changes the near-term incentives. Iran gets oil-sale waivers, movement on frozen assets, and a 60-day path to sanctions relief; the U.S. gets a claimed end to the war, a Hormuz reopening path, and G7 support for implementation ([AP terms](https://apnews.com/article/19652f4611b704c0a991bf1f5bc9a4b9); [Reuters via Investing.com](https://www.investing.com/news/world-news/usiran-deal-promises-end-to-war-but-how-it-will-work-remains-unclear-4743945); [Reuters G7](https://au.investing.com/news/world-news/g7-leaders-demand-ceasefire-in-lebanon-welcome-iran-deal-4491804)). That makes an intentional restart in the next week less likely than the recent strike headlines imply. The risk is implementation, not ideology.

Recent conflict data fit that split. ACLED/HDX country-month political-violence data are not U.S.–Iran dyad data, and June is partial through June 17, 2026, so I use them only as context. They show violence inside Iran is far below the March war peak, while Lebanon remains a live front ([ACLED](https://acleddata.com/data/); [HDX HAPI documentation](https://hdx-hapi.readthedocs.io/en/latest/data_usage_guides/coordination_and_context/)).

| Month | Iran events | Iran fatalities | Lebanon events | Lebanon fatalities |
|---|---:|---:|---:|---:|
| 2025-07 | 39 | 47 | 175 | 49 |
| 2025-08 | 21 | 38 | 161 | 38 |
| 2025-09 | 13 | 20 | 166 | 35 |
| 2025-10 | 28 | 18 | 156 | 34 |
| 2025-11 | 23 | 22 | 186 | 43 |
| 2025-12 | 8 | 19 | 190 | 13 |
| 2026-01 | 207 | 4,980 | 234 | 22 |
| 2026-02 | 109 | 277 | 193 | 33 |
| 2026-03 | 2,325 | 1,131 | 2,392 | 966 |
| 2026-04 | 685 | 201 | 1,774 | 788 |
| 2026-05 | 41 | 51 | 2,099 | 612 |
| 2026-06 through Jun. 17 | 51 | 23 | 695 | 206 |

The biggest downside path is Lebanon. AP reported on June 16 that Iran says the U.S. deal requires Israel to withdraw from Lebanon, while a U.S. official said the deal does not require that and Netanyahu said Israel would remain as long as necessary ([AP](https://apnews.com/article/d79458506c46e3f4a78aef0f9d8b9250)). Reuters reported on June 17 that Israel says it is not bound by the U.S.–Iran deal, Hezbollah believes Iran will not accept a permanent truce if Israeli occupation continues, and G7 leaders demanded an immediate Lebanon ceasefire ([Reuters via Investing.com](https://www.investing.com/news/world-news/usiran-deal-promises-end-to-war-but-how-it-will-work-remains-unclear-4743945); [Reuters G7](https://au.investing.com/news/world-news/g7-leaders-demand-ceasefire-in-lebanon-welcome-iran-deal-4491804)). This matters because an Israel–Hezbollah event only resolves this question NO if it pulls the U.S. and Iran back into direct sustained hostilities.

The second downside path is Hormuz. AP reported that allies are planning a defensive mine-clearance and escort mission to reassure shippers, and the MOU itself allows up to 30 days to remove technical, military, and demining obstacles ([AP Hormuz mission](https://apnews.com/article/80c149a4367dd31c6e85e9b25daa4129); [AP transcript](https://apnews.com/article/8576fbe2be1309977e903463fbf57ee6)). Reuters reported that shippers may wait weeks before trusting the route, and Iranian state television said vessels still needed to coordinate with the Revolutionary Guards ([Reuters via Investing.com](https://www.investing.com/news/world-news/usiran-deal-promises-end-to-war-but-how-it-will-work-remains-unclear-4743945)). That is exactly the kind of crowded military environment where a drone, mine, escort, or blockade-removal incident could become a direct U.S.–Iran exchange.

My numerical estimate starts from a high one-week survival prior, around 96%–98%, from written ceasefire base rates. I then apply case-specific downside: about 6% for a Hormuz incident escalating beyond a contained violation, 4% for Lebanon/Israel spillover producing direct U.S.–Iran action, 3% for one side walking away or officially declaring the deal breached, 3% for command-control or misattribution around drones and naval forces, and 1%–2% for residual current-status ambiguity despite the late signing reports. These pathways overlap, so the combined NO risk is not their simple sum. I put the all-in NO risk at about 18%, giving 82% YES.

## What's non-obvious
The severe June incidents cut both ways. They raise the chance that something kinetic happens before June 24. But they also show how the parties and the press have treated even serious incidents as violations inside a ceasefire, not automatically as the end of it. Under this question’s rules, a drone interception, proxy attack, confused tanker incident, or isolated self-defense strike is probably not enough by itself.

The new MOU is more useful for a 7-day forecast than for a 60-day forecast. It defers the hardest nuclear and sanctions questions while creating immediate benefits for both governments. The same deferral makes July and August dangerous. For June 17–24, it mostly buys time.

## Limitations
The main limitation is the signing status. Axios says the MOU is now in effect, and AP live coverage says a U.S. official called the signed MOU final, but AP also described a Friday formal ceremony and noted that either side can walk away during the 60-day process ([Axios](https://www.axios.com/2026/06/17/iran-deal-signing-text-release); [AP live](https://apnews.com/article/a7ab28d9b34edfaa2061a67616f610bc)). I do not think this changes the forecast date status enough to make NO the baseline, because the older April ceasefire was still being treated as extended.

The second limitation is that current public event data are not dyad-specific enough. ACLED/HDX is country-month, not direct U.S.–Iran event coding, and the June observations are partial through June 17. The exact resolution will depend on how AP, Reuters, BBC, the Washington Post, the New York Times, and similar outlets characterize any new event.

The estimate would move below 70% if a major Israeli operation in Lebanon occurs before the Friday Switzerland meeting and Iran retaliates directly against U.S. assets. It would move above 90% if the Friday meeting passes without public dispute and Hormuz traffic restarts under escort or demining without a reported clash.

## Sources

- Domain Expert Search (mcp)
  > Found 14 subagent groups for 'U.S. Iran ceasefire war Strait of Hormuz Lebanon escalation June 2026 conflict and diplomatic risk assessment':
- Acled (mcp)
  > {
- imf Portwatch (mcp)
  > Chokepoint Transit Data (31 records):
- gpr (mcp)
  > Country GPR Index (Benchmark (1985-present))
- Domain Expert Research Task (mcp)
  > Job domain_expert_research_task_9a518b1a1f done after 346606ms.
- [investing.com](https://www.investing.com/news/commodities-news/us-officials-says-iran-pact-signed-hormuz-traffic-will-rise-significantly-4742748) (tool)
- [investing.com](https://www.investing.com/news/world-news/iran-us-agree-to-halt-war-and-reopen-hormuz-sending-oil-prices-tumbling-4741185) (tool)
- [apnews.com](https://apnews.com/article/8576fbe2be1309977e903463fbf57ee6) (tool)
- [apnews.com](https://apnews.com/article/a7ab28d9b34edfaa2061a67616f610bc) (tool)
- [axios.com](https://www.axios.com/2026/06/17/iran-deal-signing-text-release) (tool)
- [washingtonpost.com](https://www.washingtonpost.com/business/2026/06/02/iran-us-israel-war-2-june-2026/f524ac0e-5e75-11f1-9c46-d6211372eede_story.html) (tool)
- [apnews.com](https://apnews.com/article/a9495a8e67035b8596a3739c8cde0978) (tool)
- [apnews.com](https://apnews.com/article/28d80744e192ae0d5cce73a5a08af906) (tool)
- [gmanetwork.com](https://www.gmanetwork.com/news/topstories/world/991056/us-iran-exchange-attacks-as-trump-threatens-further-escalation/story) (tool)
- [ca.investing.com](https://ca.investing.com/news/world-news/iran-peace-deal-looms-while-new-military-action-flares-near-strait-of-hormuz-4689586) (tool)
- [investing.com](https://www.investing.com/news/commodities-news/hezbollah-believes-iran-will-not-sign-final-nuclear-deal-if-israel-stays-in-lebanon-4745495) (tool)
- [au.investing.com](https://au.investing.com/news/commodities-news/tehran-can-immediately-sell-oil-upon-signing-usiran-deal-us-official-says-4490590) (tool)
- [internazionale.it](https://www.internazionale.it/ultime-notizie-reuters/2026/06/09/trump-says-new-israel-iran-strikes-won-t-affect-peace-deal) (tool)
- [internazionale.it](https://www.internazionale.it/ultime-notizie-reuters/2026/06/15/hezbollah-has-not-carried-out-operations-since-iran-us-deal-hezbollah-official-tells-reuters) (tool)
- [au.investing.com](https://au.investing.com/news/world-news/usiran-deal-promises-end-to-war-but-how-it-will-work-remains-unclear-4489128) (tool)
- [washingtonpost.com](https://www.washingtonpost.com/national-security/2026/06/10/us-iran-negotiate-via-ultimatums-attacks-amid-fragile-ceasefire) (tool)
- [peopledaily.digital](https://peopledaily.digital/news/us-iran-deal-eases-uncertainty-over-the-war-but-there-is-much-still-to-play-out) (tool)
- Correlatesofwar (mcp)
  > Inter-State Wars involving 'United States'
- [apnews.com](https://apnews.com/article/01a13e9a63ece786a0a7fa4933dbf09b) (tool)
- [investing.com](https://www.investing.com/news/world-news/us-says-it-struck-iranian-military-sites-tehran-responds-with-air-base-attack-4718003) (tool)
- [straitstimes.com](https://www.straitstimes.com/world/middle-east/iran-says-draft-us-deal-includes-oil-sanctions-waiver-nuclear-limits-and-asset-release) (tool)
- [internazionale.it](https://www.internazionale.it/ultime-notizie-reuters/2026/06/09/us-military-says-it-began-launching-strikes-against-iran) (tool)
- [marketscreener.com](https://www.marketscreener.com/news/trump-cancels-strikes-against-iran-planned-for-thursday-evening-ce7f5cd8dd81f223) (tool)
- [au.investing.com](https://au.investing.com/news/world-news/us-iran-reach-deal-to-end-war-signing-set-for-friday-4486239) (tool)
- [kelo.com](https://kelo.com/2026/06/14/iran-says-draft-us-deal-includes-oil-sanctions-waiver-nuclear-limits-and-asset-release) (tool)
- [investing.com](https://www.investing.com/news/commodities-news/usiran-deal-allows-tehran-to-immediately-sell-oil-upon-signing-says-us-official-4745428) (tool)
- [apnews.com](https://apnews.com/article/19652f4611b704c0a991bf1f5bc9a4b9) (tool)
- [investing.com](https://www.investing.com/news/world-news/us-iran-reach-peace-deal-signing-set-for-friday-pakistan-says-4741116) (tool)
- [apnews.com](https://apnews.com/article/48bf108403bcb47d96b4e25b53e37d47) (tool)
- [kold.com](https://www.kold.com/2026/06/17/iran-will-reopen-strait-hormuz-can-sell-oil-freely-under-deal-with-us-according-leaks?outputType=amp) (tool)
- [axios.com](https://www.axios.com/2026/06/09/us-strikes-iran-army-helicopter-response) (tool)
- [chathamhouse.org](https://www.chathamhouse.org/publications/the-world-today/2026-06/can-deal-between-us-and-iran-become-lasting-settlement) (tool)
- [chathamhouse.org](https://www.chathamhouse.org/2026/06/iran-and-new-persian-gulf-equilibrium) (tool)
- [investing.com](https://www.investing.com/news/commodities-news/us-military-strikes-iranian-boats-missile-launch-sites-centcom-4708667) (tool)
- [csis.org](https://www.csis.org/analysis/can-iran-negotiations-survive-israel-iran-escalation) (tool)
- [csis.org](https://www.csis.org/analysis/fragile-us-iran-ceasefire-issues-watch) (tool)
- [The Latest: US military launches strikes against Iran in response to downing of American helicopter](https://apnews.com/article/3c1d3832d1113e975a2b4ec0aba926da) (openai)
- [U.S. bombs Iran for second straight night](https://www.axios.com/2026/06/10/trump-iran-strike-situation-room-meeting) (openai)
- [US military launches new strikes on Iran after Apache downing](https://www.streetinsider.com/Reuters/US%2Bmilitary%2Blaunches%2Bnew%2Bstrikes%2Bon%2BIran%2Bafter%2BApache%2Bdowning/26624853.html) (openai)
- [U.S. Forces Start Mine Clearance Mission in Strait of Hormuz > U.S. Central Command > U.S. Central Command (CENTCOM) Official Press Releases](https://www.centcom.mil/MEDIA/PRESS-RELEASES/Article/4457220/us-forces-start-mine-clearance-mission-in-strait-of-hormuz) (openai)
- Bunker (mcp)
  > Error fetching spread data: asyncio.run() cannot be called from a running event loop
- Statedept (mcp)
  > Travel Advisory for IR
- [travel.state.gov](https://travel.state.gov/content/tsg_aem/us/en/home/international-travel/travel-advisories/destination.irn.html) (tool)
- Ucdp (mcp)
  > Tool ucdp_get_conflict_summary on ucdp returned an error:
- [internazionale.it](https://www.internazionale.it/ultime-notizie-reuters/2026/06/17/trump-says-iran-memorandum-of-understanding-is-not-final) (tool)

## Question Details

As of May 4, 2026, the United States and Iran are in a fragile and temporary ceasefire following the outbreak of war on February 28, 2026. A two-week ceasefire was agreed around April 7–8, 2026, and although U.S. officials have claimed that hostilities have ‘terminated’ since then, tensions remain extremely high, with recent reports of Iranian fire on U.S. ships and threats to maritime operations in the Strait of Hormuz putting the ceasefire at risk. (en.wikipedia.org) This question asks: if assessed on a given calendar date (the "forecast date"), will the ceasefire between Iran and the United States still be holding 7 days later? For example, if the forecast date is May 4, 2026, the resolution date would be May 11, 2026. The question is intended to be evergreen and reusable: each time it is forecast, it refers to whether the ceasefire remains in effect 7 days after the forecast date.

### Resolution Criteria

The question resolves YES if, on the calendar date exactly 7 days after the forecast date, a ceasefire between Iran and the United States is still in effect. A ceasefire is considered to be "still in effect" if there has been no acknowledged resumption of sustained or large-scale military hostilities between U.S. and Iranian forces prior to or on the resolution date. The question resolves NO if, before or on the resolution date, there is clear and widely reported evidence of renewed active hostilities between the United States and Iran, including but not limited to: - Airstrikes, missile strikes, or naval attacks conducted by either side against the other - Sustained exchanges of fire between U.S. and Iranian forces - An official declaration by either government that the ceasefire has ended or that hostilities have resumed Isolated incidents (e.g., single exchanges, proxy attacks, warnings, or minor skirmishes) do NOT by themselves count as a breakdown unless they are widely characterized by reliable sources as ending the ceasefire. Resolution will be based on consensus reporting from major international news organizations (e.g., AP, Reuters, BBC, Washington Post, New York Times).

### Fine Print

- The "forecast date" is the date on which the prediction is made; the "resolution date" is exactly 7 days later (using calendar days, not hours). - If no ceasefire is in effect on the forecast date, the question resolves NO. - If the status of the ceasefire is ambiguous or disputed, resolution should follow the preponderance of credible reporting. - Cyberattacks, proxy actions by third parties, or economic measures (e.g., sanctions, blockades) do not count as ending the ceasefire unless they are widely reported as marking a return to open warfare between the U.S. and Iran. - If no reliable information is available to determine whether the ceasefire is still in effect, the question should be annulled. - The question concerns direct conflict between the United States and Iran only; actions involving third countries count only if they clearly constitute U.S.–Iran hostilities.