US-Iran Conflict SITREP: Khamenei Succession Fuels Hormuz Crisis — March 13, 2026
Executive Summary
The US-Iran conflict has entered a critical phase following the assassination of Supreme Leader Ali Khamenei, with Mojtaba Khamenei assuming leadership and vowing to maintain the closure of the Strait of Hormuz in retaliation for US-Israeli strikes. Joint US-Israeli airstrikes have targeted Iranian military infrastructure, nuclear scientists, and Basij checkpoints in Tehran, while Iran has escalated missile and drone attacks on US bases in the Gulf, Israel, and allied territories. Hezbollah has intensified rocket barrages from Lebanon, prompting Israeli responses in Beirut, exacerbating regional tensions. Economic fallout is severe, with oil prices surging to $100+ per barrel and global supply chains disrupted, costing the US over $11.3 billion in the first six days of conflict. Humanitarian impacts are mounting, including strikes on civilian sites like a Beirut university and an Iranian school, alongside domestic incidents in the US such as attacks on Jewish institutions linked to Iranian proxies. Cyber threats from Iran-linked hackers target US infrastructure, and proxy groups like Jaysh al-Ghadab conduct drone strikes on US assets in Iraq and Kuwait. International reactions vary, with Russia providing intelligence support to Iran and allies like Italy releasing oil reserves to mitigate shortages. The conflict shows no signs of de-escalation, with US officials estimating a 4-5 week duration.
Theater Updates
4 theatersPersian Gulf / Strait of Hormuz
ACTIVE- •Iran's new Supreme Leader Mojtaba Khamenei vows to keep Strait closed, leading to 600% rise in tanker charter costs and oil prices at $100/barrel.
- •US-Israeli airstrikes hit Tehran and Karaj; Iran retaliates with missile barrages on Saudi, UAE, and Bahrain bases.
- •Ship attacks choke off Hormuz traffic; US considers naval escorts for commercial vessels.
Lebanon-Israel Border
CONTESTED- •Hezbollah launches rocket barrages on Upper Galilee; Israel bombs Beirut university and Dahye suburbs, killing academics.
- •Israeli consultations for expanded ground operation in Lebanon; clashes near UN troops intensify.
- •Netanyahu warns Hezbollah of heavy price for aggression.
US Homeland and Allies
CONTESTED- •Attacks on Jewish school and synagogue in Michigan by ISIS-linked individual; NYPD increases patrols.
- •Iran-linked hackers target US infrastructure; White House denies reports of drone strike on California.
- •Drone attack by Iraqi proxy on US base in Kuwait using Shahed-101.
Iraq / Kuwait Proxies
ACTIVE- •US deploys LUCAS strike drones against Iranian proxies in Iraq.
- •CENTCOM strikes Russian-supplied Iranian air defense systems in Khuzestan.
- •Russia provides satellite intel to Iran for attacks on US-Israel targets.
Key Events
6 eventsAssassination of Ayatollah Ali Khamenei
Leadership vacuum filled by Mojtaba Khamenei, who escalates vows for Hormuz blockade and regional retaliation, potentially prolonging conflict and destabilizing Iranian regime.
US War Costs Exceed $11.3 Billion in First Six Days
Highlights unsustainable financial burden on US, with supplemental funding over $50 billion requested, straining defense budgets and global economy amid oil disruptions.
Israeli Strikes Kill Top Iranian Nuclear Scientists
Degrades Iran's nuclear program, forcing resource diversion from conventional warfare and weakening long-term strategic deterrence capabilities.
Hezbollah Rocket Barrages and Israeli Airstrikes in Beirut
Risks broader Lebanon incursion, drawing in more actors and complicating US-Israeli focus on Iran core theater.
Iran-Linked Cyber and Drone Attacks on US Assets
Expands conflict to hybrid domains, increasing vulnerability of US homeland and critical infrastructure to asymmetric threats.
Global Oil Price Surge to $164/Barrel Forecast
Threatens economic recession worldwide, benefiting Russia with $1.3-1.9B windfall while pressuring US allies and inflating war costs.
Threat Assessment
Threat level elevated to CRITICAL due to Iran's closure of Strait of Hormuz, disrupting 40% of global oil transit and enabling proxy escalations across multiple fronts. Missile and drone threats to US bases in Gulf states remain high, with over 1,800 intercepts by UAE alone. Cyber intrusions by Iran-linked actors pose risks to US power grids and financial systems. Domestic terror incidents in US indicate spillover, with potential for further attacks on Jewish sites. Hezbollah's involvement raises specter of multi-front war, while Russian support to Iran enhances targeting accuracy. Overall, escalation risks regional war involving allies like Saudi Arabia and Pakistan protests.
24-48 Hour Forecast
In the next 24-48 hours, expect intensified US-Israeli airstrikes on Tehran and Iranian energy sites, prompting Iranian missile volleys on Gulf bases and possible proxy ground actions in Iraq. Hezbollah may launch additional barrages, with Israel poised for limited ground incursions into southern Lebanon. Oil prices likely to spike further if Hormuz remains contested; US naval escorts could commence if conditions allow. Cyber attacks on US targets probable. No immediate de-escalation; conflict duration projected at 4-5 weeks unless political breakthrough occurs.
Sources
12 cited- 1.France 24 ME
- 2.telegram
- 3.Guardian World
- 4.NPR World
- 5.Middle East Monitor
- 6.BBC Middle East
- 7.Middle East Eye
- 8.gdelt
- 9.Iran International
- 10.Al Jazeera
- 11.Breaking Defense
- 12.gCaptain Maritime