The Trump administration ordered new economic sanctions against Iran Friday in response to the attack last weekend in Saudi Arabia. The sanctions target Iran's central bank and its sovereign wealth fund.
"This is very big," said Treasury Secretary Steven Mnuchin. "We've now cut off all sources of funds to Iran."
The move comes less than a week after an attack on a Saudi oil facility that temporarily cut off nearly 6% of the world's oil supply. While Houthi rebels in Yemen claimed responsibility for that attack, the administration suspects Iran was behind it.