U.S. Treasury Secretary Scott Bastien announced plans to impose secondary sanctions on one Iranian bank each week starting next week [1], [2].

This strategy represents a shift toward a rapid-fire cadence of economic penalties. By targeting financial institutions on a weekly basis, the U.S. aims to disrupt Tehran's ability to conduct international trade and secure funding.

Bastien said the administration plans to achieve an unprecedented level of economic isolation for Iran [2]. The new measures will specifically target Iranian banks and other entities worldwide to intensify economic pressure on the government in Tehran [1], [2], [3].

Under the proposed schedule, the Treasury Department will identify and sanction one additional Iranian bank every week [1]. Bastien said to expect the first of these new measures next week as part of a broader package of actions against the country [1].

While some reports describe the move as a general new package of measures [3], the Treasury Secretary's specific timeline indicates a systematic approach to dismantling the Iranian financial network. These secondary sanctions typically penalize non-Iranian banks, and companies that continue to do business with the targeted Iranian entities.

Bastien said the goal is to tighten the economic chokehold on Tehran [3]. The administration has not yet specified the total number of banks that will be included in this weekly cycle, or the specific criteria for selection.

We plan an unprecedented economic isolation of Iran by imposing weekly secondary sanctions on its banks.

The transition to a weekly sanctions cycle suggests the U.S. is moving away from sporadic, large-scale penalty packages in favor of constant, incremental pressure. This approach is designed to create a permanent state of financial instability for Iranian banks, making it increasingly difficult for third-party global financial institutions to risk any association with Tehran due to the high frequency of new designations.