• U.S. Treasury Secretary Scott Bessent publicly urged G-7 and European partners to ramp up financial sanctions and enforcement against Iran, targeting illicit finance supporting military and proxy activities.
  • The appeal comes ahead of G-7 finance minister meetings in Paris and follows recent U.S. Treasury actions against Iranian shadow-banking, oil-smuggling, and front-company networks.
  • Stricter measures could disrupt Iranian oil exports and tighten global energy supply channels, with potential volatility in oil, shipping, and insurance markets.

A Call for Stronger Coordination

U.S. Treasury Secretary Scott Bessent has called on Europe, the G-7, and other allies to intensify financial sanctions and enforcement against Iran, aiming to disrupt what he described as illicit finance funding Tehran’s military and proxy activities. Speaking in Paris ahead of G-7 finance minister talks, Bessent urged partners to broaden existing sanctions regimes to “crack down on the illicit finance” supporting Iran’s war-related operations, according to people familiar with the matter.

The remarks align with a string of recent U.S. Treasury actions targeting shadow-banking networks, oil-transport routes, and front companies linked to Iran’s petroleum exports and money-laundering operations. The Treasury’s Office of Foreign Assets Control has announced multiple designation rounds in 2025 and 2026, targeting individuals, companies, vessels, and networks involved in oil sales and illicit finance, often naming UAE- and Singapore-linked entities.

Implications for Global Markets

Tighter sanctions and enforcement aim to disrupt Iranian oil exports, shadow shipping fleets, and laundering routes, which could tighten global energy supply channels and influence regional shipping and insurance markets in the near term. Financial institutions and commodity traders active in regions that have served as conduits for Iranian trade may face higher compliance costs, greater de-risking, and disruption to correspondent banking relationships. Markets sensitive to Middle East energy risks could react with volatility depending on perceived impact on flows.

The push may also raise tensions with countries that host or trade with entities in Iran’s shadow networks, including firms and trading hubs in the Gulf and parts of Asia, complicating multilateral cooperation and enforcement logistics. Bessent’s call signals U.S. intent to press allied coordination on secondary sanctions and enforcement, increasing diplomatic pressure on EU and other jurisdictions to tighten financial controls.

Background and Context

Europe and the EU previously imposed broad financial and trade restrictions on Iran over nuclear and ballistic-missile concerns, including SWIFT and banking measures. Since 2024–2025, U.S. Treasury actions have intensified under a “maximum pressure” style campaign targeting oil smuggling, shadow banking, and entities tied to IRGC-linked revenue streams. The current calls are a continuation of that enforcement trend rather than a wholly new policy direction.

“What institutional investors like us are really focused on is regulatory stability,” said Andrea Valeri, Blackstone’s country Chairman for Italy, at a recent conference, though not directly related to the sanctions push. The remark underscores the broader financial environment in which such sanctions operate.

Short term, expect diplomatic outreach by the U.S. Treasury and State Departments to G-7 and EU counterparts seeking coordinated listings, stronger enforcement guidance, and possible expansion of secondary-sanctions posture. Long term, sustained multilateral pressure that successfully constrains Iran’s revenue streams could degrade financing for regional proxies, but it may also incentivize Tehran to develop alternative evasion techniques.

Correction: An earlier version of this article misstated the timing of Bessent’s remarks. They were made ahead of the G-7 meetings, not during.