The department noted that sanctions did not extend to Iran's central bank but would affect certain transactions by Iran, including those involving USA dollars.
President Trump last week pulled out of the Obama-era Iran nuclear agreement.
Typically, when the US punishes individuals with sanctions, it prohibits Americans or USA companies from doing business with them. "The global community must remain vigilant against Iran's deceptive efforts to provide financial support to its terrorist proxies", Mnuchin said.
A European official said that some senior figures in the United States administration were pushing for a "North Korea scenario" in Iran, in reference to the drastic sanctions imposed on the North Korean regime which Washington believes helped push the country's leader, Kim Jong Un, into halting missile and nuclear testing and agreeing to renewed negotiations. Iranian media initially reported the choice based mostly on reviews within the worldwide media.
Typically, when the US punishes individuals with sanctions, it prohibits Americans or USA companies from doing business with them.
In the second move in a week taking aim at the money networks of the Revolutionary Guards, or IRGC, the US Treasury also blacklisted another senior official, Ali Tarzali, who works in the central bank's global division. Half of Iran's lawmakers have written to President Hassan Rouhani demanding the removal of the central bank chief, accusing him of mismanaging the banking industry and currency markets as the rial weakened.
In a 2016 assembly of the Council on International Relation in Washington, Seif mentioned Iran achieved "virtually nothing" from the deal.
The Treasury issued the sanctions against Central Bank governor Valiollah Seif and assistant director Ali Tarzali.
The sanctions targeting Iran's central bank executives are some of the first actions by Trump's administration since pulling out of the deal to start ramping up that economic pressure.
Hezbollah, the powerful Shia guerrilla force that is based in Lebanon and is a prominent political player there, has long helped carry out Iran's foreign policy objectives in the Arabic-speaking world. Hezbollah fought a battle with Israel in 2006, and Israeli officers have been deeply involved concerning the prospect of one other confrontation. Earlier this yr, the Trump administration slapped sanctions on the deputy governor of Russia's central financial institution, Alexander Torshin.