The U.S. government announced sweeping new financial sanctions on Aug. 24 [2] to further isolate Iran's economy from the global financial system.

These measures signal an escalation in economic pressure intended to force Tehran into a diplomatic agreement and curb activities that the U.S. says threaten regional security.

The sanctions target third-party entities, shadow-banking channels, and 60 companies [3]. According to the U.S. Treasury, the operation is designed to block the financial networks that enable illicit activities and close loopholes used to evade previous restrictions.

Donald Trump described the move as "the most crushing economic operation" [1]. The administration is pursuing what it characterizes as an economic warfare campaign to pressure the Iranian government after it failed to reach a diplomatic deal [1, 4].

"We are closing the loopholes that allow Iran to evade sanctions and targeting the financial networks that enable its illicit activities," a U.S. Treasury spokesperson said [2].

The new policy focuses on intermediaries that facilitate trade and finance for Iran. By targeting these third-party networks, the U.S. aims to restrict the flow of capital into Tehran's economy and limit its ability to fund regional operations.

While some reports have suggested the U.S. might authorize the sale of Iranian oil as part of a peace deal, the current administration's actions on Aug. 24 [2] indicate a shift toward tighter restrictions. The Treasury's current strategy prioritizes the isolation of Iranian financial channels over the waiver of existing oil sanctions.

“"the most crushing economic operation"”

The expansion of sanctions to include third-party entities and shadow-banking networks represents a shift from targeting the Iranian state directly to targeting the global infrastructure that sustains its economy. By focusing on the intermediaries, the U.S. is attempting to create a financial perimeter around Iran, increasing the risk for any international bank or company dealing with Tehran regardless of their home jurisdiction.