Treasury unveils largest-ever sanctions targeting Houthi funding networks

The U.S. Department of the Treasury announced a sweeping sanctions package on Jan. 16 that it described as its largest action to date targeting networks that enable Ansarallah, the Iran-backed Houthis. The Office of Foreign Assets Control designated 32 individuals and entities and four vessels under counterterrorism authority, saying the move disrupts global illicit fundraising, smuggling, weapons procurement and maritime facilitation tied to the group.

Treasury officials said the designations target the “full cycle” of Houthi operations: transferring oil products, including ship-to-ship transfers; procuring weapons and dual-use components for missiles and unmanned aerial vehicles; providing financial services; and arranging commercial shipments that link Houthi and Iranian actors. The designated parties are reported to be located across Yemen, the People’s Republic of China, the United Arab Emirates, the Marshall Islands and Iran, reflecting a geographically dispersed facilitation network that Treasury says operates through commercial maritime routes and regional financial centers.

Four tankers were among the designated vessels. Treasury identified one very large crude carrier as VLCC Yemen (IMO: 9323948), which had been used by the Houthis as a floating storage facility after acquisition by the United Nations. One of the sanctioned vessels is reported to have carried shipments for a Houthi financial official, Sa’id al-Jamal. In several instances, the action targets procurement operatives and suppliers in Iran and the PRC alleged to have enabled acquisition of components used in ballistic and drone programs.

Officials framed the action within a broader push to pressure Iran and its proxies. Treasury said the designations were made pursuant to Executive Order 13224, as amended, and consistent with National Security Presidential Memorandum 2, which directs a campaign of maximum economic pressure on Iran and affiliated networks. The department listed a sequence of prior related measures dating back to June 17, 2024, with additional rounds in July, October and December 2024 and multiple actions across 2025, underscoring an escalation in targeted economic tools.

Under Secretary for Terrorism and Financial Intelligence John K. Hurley said, "The Houthis continue to threaten US personnel and assets in the Red Sea, attack our allies in the region, and undermine international maritime security in coordination with the Iranian regime. We will continue applying maximum pressure against those who threaten the security of the United States and the region." Acting Under Secretary Bradley T. Smith added that Treasury "remains committed to using our full suite of tools to disrupt the supply chain networks that enable the Houthis’ destabilizing activities."

The sanctions package includes companies, owners and operatives alleged to provide financial services, logistical support and commercial cover for illicit transfers. Treasury’s count of 32 individuals and entities and four vessels is the authoritative figure in its materials, although earlier, less detailed briefings cited a smaller tally of 21 individuals and entities and one vessel linked to oil transfers and weapons procurement.

Market implications could be immediate for shipping and insurance in the Red Sea and adjacent maritime corridors. Insurers and freight operators already price in risks tied to Houthi attacks; broader targeting of supply chains and vessel registries could raise compliance costs, complicate oil transfers and prompt rerouting that increases freight rates. For regional financial centers and trading firms, the designations heighten pressure to screen counterparties and to sever channels used for illicit revenue generation.

Enforcement will hinge on international cooperation and industry compliance. Treasury positioned the action as part of a sustained campaign to choke off the financing and material flows that have enabled attacks on shipping and regional destabilization, signaling further measures could follow as authorities track evasive adaptation by sanctioned networks.