The United States and Yemen’s Houthi movement reached a ceasefire agreement on May 6, 2025, ending months of American and British airstrikes against targets across Yemen. The deal, brokered through intensive Omani mediation, marked the first formal de-escalation between Washington and the Iran-backed group since the Red Sea shipping crisis erupted in late 2023 (Wikipedia). Under the terms of the agreement, the Houthis committed to halting attacks on American-flagged and American-linked vessels transiting the Red Sea and Gulf of Aden.
The ceasefire brought an immediate end to the US military campaign that had intensified between March and May 2025, during which American forces struck Houthi missile launchers, drone storage facilities, and command centers across western Yemen. It also concluded the broader US-UK joint air operations that had been conducted since January 2024 in response to the Houthis’ campaign against commercial shipping (BBC).
Ceasefire Agreement
Oman played a central role in negotiating the deal, leveraging its longstanding diplomatic relationships with both Washington and the Houthi leadership in Sana’a. Omani officials shuttled between the parties for several weeks before finalizing the terms, which centered on a mutual cessation of hostilities between US forces and the Houthi movement specifically (Al Jazeera). The agreement did not extend to a broader resolution of the Yemen civil war or address Houthi attacks on non-American vessels.
We have agreed to stop targeting American ships, but our operations in support of Gaza and against the Zionist entity’s interests in the Red Sea will continue until the aggression on our Palestinian brothers ends.
The distinction between US-linked vessels and all other maritime traffic proved to be the agreement’s most significant limitation. While the Houthis agreed to cease fire on American targets, they explicitly reserved the right to continue interdicting ships they deemed connected to Israel or complicit in the Gaza conflict. Washington accepted this framework as the best achievable outcome given the military and political realities on the ground (NYT).
Impact on Red Sea Shipping
Despite the ceasefire, major shipping companies showed little inclination to resume normal Red Sea transit routes. Maersk, MSC, and other leading container lines continued directing their vessels around the Cape of Good Hope, adding approximately ten days and significant fuel costs to Asia-Europe voyages (Reuters). Insurance premiums for Red Sea transits remained elevated, reflecting the continued threat posed by Houthi attacks on non-American shipping.
The ceasefire reduced the overall volume of Houthi attacks but did not eliminate the fundamental risk to maritime traffic through the Bab al-Mandab Strait. In the weeks following the agreement, the Houthis launched strikes against several commercial vessels they identified as having Israeli connections, demonstrating that their maritime interdiction campaign remained fully operational (Wikipedia). For the shipping industry, the practical impact of the US-Houthi deal was marginal — the threat environment had improved for American-flagged carriers but remained largely unchanged for everyone else.
Global supply chains that had already adjusted to the longer Cape route showed no signs of reverting. Freight rates on Asia-Europe corridors stabilized at levels well above their pre-crisis baseline, and port congestion patterns that had shifted in response to the rerouting became semi-permanent features of the logistics landscape (Financial Times).
What’s Next
The US-Houthi ceasefire represented a narrow but meaningful diplomatic achievement. It demonstrated that the Houthis were willing to negotiate specific security arrangements with Washington, even as they maintained their broader campaign of maritime disruption. For the United States, the deal reduced the risk of further military entanglement in Yemen without requiring concessions on the wider Middle East conflict.
The durability of the agreement depends on several factors beyond the control of either party. A significant escalation in the Gaza conflict could pressure the Houthis to expand their target set, while domestic political shifts in Washington could alter the American calculus on enforcement. Oman’s continued engagement as a mediator will be critical to managing disputes over implementation and preventing misunderstandings from spiraling into renewed hostilities.
The ceasefire also raised questions about the future of international naval operations in the Red Sea. The US-led multinational coalition that had been conducting patrols and defensive operations since early 2024 faced an uncertain mandate, as the threat it was designed to counter had diminished for American interests but persisted for allied nations’ shipping (BBC). Whether the agreement serves as a stepping stone toward broader de-escalation or merely freezes one dimension of a multi-layered conflict remains the central question for the region’s security outlook.