
The targets of the sanctions included Iran's manufacturing, mining and textile sectors as well as senior Iranian officials who Washington said were involved in the January 8 attack on military bases housing US troops.
The sanctions were announced by US Treasury Secretary Steven Mnuchin in an appearance at the White House alongside US Secretary of State Mike Pompeo.
US sanctions cause environmental crisis in Iran
Tensions between Washington and Tehran have spiked since President Donald Trump unilaterally withdrew in 2018 from the Iran nuclear deal struck by his predecessor Barack Obama and began reimposing sanctions that were relaxed under the accord.
Fears that the United States and Iran were bracing for war in the Middle East flared over the past week after a US drone strike killed Iranian commander Qassem Soleimani, spurring Iran's retaliatory strike on the US bases in Iraq.
Although the two sides seem to have stepped back from the brink of armed conflict, Trump vowed on Wednesday to impose the additional sanctions.
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