The United States has broadened its economic sanctions against Iran, focusing on its oil sector and cryptocurrency activities. The Treasury Department announced the measures target the network led by Mohammad Hossein Shamkhani, a prominent figure in petroleum shipping. This network is accused of being central to Iran's continued oil exports, despite existing restrictions. The sanctions also address the network’s expansion into global commodities trading, indicating an attempt to circumvent initial limitations. This move signifies an escalation in U.S. efforts to disrupt Iran’s revenue streams. The US government aims to further restrict Iran’s ability to fund its activities through illicit economic dealings. Officials state these actions demonstrate a continued commitment to holding Iran accountable.