Treasury Secretary Scott Bessent on Sunday announced a broad new sanctions initiative against Iran called 'Operation Economic Outcast,' a campaign designed to deepen Iran's economic isolation by targeting both Iranian entities and the foreign companies and nations that trade with them. The announcement marks one of the most aggressive U.S. economic pressure campaigns against Tehran in years.

The sanctions package includes secondary sanctions — penalties directed at third-party countries and businesses that continue commercial dealings with Iran. China, which has been a significant buyer of Iranian oil, was specifically cited as a target of potential secondary measures. Officials framed the initiative as a coordinated effort to cut off Iran's remaining revenue streams.

The rollout coincided with Iran's currency, the rial, hitting a record low, a sign that existing pressure combined with the anticipation of new measures has already begun affecting the Iranian economy. U.S. officials used the phrase 'economic D-Day' to describe the scope and intent of the operation, signaling an intent to dramatically escalate financial pressure on Tehran.

The administration's move comes amid ongoing tensions over Iran's nuclear program and its support for regional proxy groups. By threatening penalties against trading partners, the U.S. is effectively seeking to force other nations to choose between access to American financial systems and continued commerce with Iran. The breadth of the secondary sanctions component represents a significant escalation over previous measures.

Iran has not yet issued an official public response to the announcement. The sanctions are expected to face scrutiny from U.S. allies and trading partners who have historically pushed back against the extraterritorial reach of American secondary sanctions regimes.