The sanctions are among a slew of fresh measures aimed at Iran and Hezbollah since U.S. President Donald Trump withdrew from the Iran nuclear deal last week.
U.S. Secretary of State Mike Pompeo is set to outline in a speech in Washington on Monday plans by the United States to build a coalition to look closer at what it sees as Iran's "destabilizing activities," spokeswoman Heather Nauert told reporters at the State Department.
In one of the biggest moves this week aimed at clamping down on Iran's overseas operations, the Treasury sanctioned Iran's central bank governor, Valiollah Seif.
On Wednesday, the United States, backed by Gulf States, imposed additional sanctions on Hezbollah's top two leaders, Sayyed Hassan Nasrallah and Naim Qassem.
Source: Voice of America