Houthi’s, Iran-Oman Deal, and Conflicting Military Doctrines – SITREP #44: September 15, 2026

ZeroFox Intelligence Flash Report - SITREP #44 - Houthi’s, Iran-Oman Deal, and Conflicting Military Doctrines - September 15, 2026

Product Serial: F-2026-09-15a

TLP:CLEAR

In this Flash report, ZeroFox researchers cover recent Houthi territorial gains in Yemen and unlikely prospects for an Iran-Oman deal to reopen the Strait of Hormuz.

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Key Findings

• Houthi actions are not directly coordinated by Iran but almost certainly benefit Iran by increasing energy prices and stretching military resources. Houthi advances will likely persist unless Saudi Arabia offers concessions or increases military support to retake Houthi-controlled parts of Yemen.
• The U.S. military has reportedly implemented a tanker-for-tanker strategy in response to Iranian attacks on U.S. warships, to run alongside an economic pressure campaign. As part of this, the United States has very likely sought to expand commercial shipping through the Strait of Hormuz (SoH). A resumption in U.S. attacks likely reflects concern that Iran will target vessels transiting the SoH outside Iranian terms.
• Occasional U.S. strikes are likely necessary to degrade Iran's ability to control the SoH while pressuring it to make concessions. Iran's political-military leadership very likely views SoH control as key to deterring future conflict as well as an economic opportunity, which constrains the effectiveness of the U.S. approach.
• Iranian leadership has consistently stated its new military doctrine is offensive and based on retaliation and preemptive attacks. U.S. military and economic escalation is unlikely to restrain Iran, and there is a roughly even chance that Iran escalates further if U.S. tactics prove successful. This risks maintaining a new cycle of escalation with the U.S. military.
• Continued progress on the Iran-Oman SoH transit agreement, alongside reports of Gulf and U.S. support, indicate that Iran is unlikely to surrender control of the strait and that continued conflict is likely costlier than accepting Iranian terms.
• Even if the deal is agreed upon, obstacles to normal SoH passage remain, as Iran has made clear that reopening still depends on further U.S. concessions linked to the June Memorandum of Understanding (MOU). If the accord never materializes or is rejected by the Trump administration, escalation is likely.
• Iran's hardline leadership is very likely continuing to drive policy decisions, reducing the likelihood that Iran adapts its positions.