US Sanctions Iran: February 25, 2026 Update | Crisis Group
Washington – The United States Treasury Department on Wednesday imposed sanctions on over 30 individuals, entities, and vessels allegedly involved in facilitating illicit Iranian petroleum sales and the production of ballistic missiles and advanced conventional weapons. The move, announced by Washington, targets what officials describe as a “shadow fleet” used to circumvent existing restrictions on Iranian oil exports.
The sanctions represent a continuation of decades-long U.S. Pressure on Iran, initially implemented following the 1979 Iranian Revolution and significantly expanded in response to concerns over its nuclear program. According to the U.S. State Department, restrictions on activities with Iran have been in place under various legal authorities since 1979, including the National Emergencies Act (NEA) of 1976, the International Emergency Economic Powers Act (IEEPA) of 1977, and the Iran Sanctions Act (ISA).
The ISA, formerly known as the Iran and Libya Sanctions Act of 1996, requires annual renewal to remain in effect. The Office of Foreign Assets Control (OFAC), the Treasury Department agency responsible for administering and enforcing these sanctions, has issued numerous advisories to guide compliance. Recent guidance from OFAC includes information on detecting and mitigating Iranian oil sanctions evasion, as well as advisories related to Iran’s ballistic missile procurement and unmanned aerial vehicle (UAV) activities. A 2025 advisory specifically focused on shipping and maritime stakeholders.
The latest sanctions are focused on disrupting Iran’s ability to generate revenue from oil sales, a critical source of funding for its government and military programs. The “shadow fleet” targeted by the U.S. Consists of vessels that allegedly transport Iranian oil, often employing deceptive shipping practices to obscure the origin and destination of the cargo. By targeting these vessels and the entities involved in their operation, the U.S. Aims to make it more difficult for Iran to export its oil and benefit from those sales.
The move also seeks to curtail Iran’s development and production of ballistic missiles and advanced conventional weapons. These weapons are seen by the U.S. And its allies as a destabilizing force in the region, capable of threatening regional security and potentially escalating conflicts. The sanctions target individuals and entities involved in the supply chain for these weapons, aiming to disrupt their production and proliferation.
The International Crisis Group noted on , that the U.S. And Iran can still avoid war, despite nearly five decades of mutual antagonism. This latest action, however, underscores the continued tensions between the two countries and the complex challenges to de-escalation.
The U.S. Has long accused Iran of supporting terrorist groups and destabilizing activities in the Middle East, including its support for proxies in countries like Lebanon, Syria, and Yemen. These accusations have been a major justification for the U.S.’s sanctions regime against Iran. Iran, in turn, has accused the U.S. Of pursuing a policy of regime change and interfering in its internal affairs.
The sanctions come at a sensitive time, as negotiations over Iran’s nuclear program remain stalled. The 2015 nuclear deal, known as the Joint Comprehensive Plan of Action (JCPOA), limited Iran’s nuclear program in exchange for sanctions relief. However, the U.S. Withdrew from the JCPOA in 2018 under the Trump administration, reimposing sanctions on Iran. Efforts to revive the deal have been unsuccessful, and Iran has continued to advance its nuclear program.
The impact of the sanctions on the Iranian economy is significant. Iran’s oil exports have been severely curtailed, and its access to international financial markets has been limited. This has led to economic hardship for many Iranians, including rising inflation and unemployment. However, Iran has also demonstrated resilience, finding ways to circumvent sanctions and maintain its economic activity.
The effectiveness of the sanctions in achieving U.S. Policy goals remains a subject of debate. Some argue that the sanctions have been successful in limiting Iran’s nuclear program and curbing its destabilizing activities. Others argue that they have been counterproductive, leading to increased tensions and undermining efforts to find a diplomatic solution. The U.S. State Department maintains a dedicated Office of Economic Sanctions Policy and Implementation responsible for enforcing the various sanctions programs.
The latest sanctions are likely to further escalate tensions between the U.S. And Iran, and could complicate efforts to revive the nuclear deal. The situation remains fluid and unpredictable, and the risk of miscalculation or escalation remains high. The international community will be closely watching how Iran responds to the new sanctions, and whether they lead to further escalation or a renewed push for diplomacy.