The U.S. says it has placed a network of Russian and Iranian companies on an international blacklist for shipping oil to Syria in violation of U.S. sanctions.
Officials say the network helps fuel the Syrian war effort of President Bashar al-Assad while providing revenue for Iran’s Islamic Revolutionary Guard Corps and the militant groups Hamas and Hezbollah.
Placement on the list blocks any U.S. assets and prohibits American entities or citizens from dealing with the companies.
Treasury Secretary Steven Mnuchin said in announcing the names Tuesday that the nine firms and people being added to the list are “critical actors” in a scheme to support Assad.
Those added to the list include a Syrian national and his Russia-based company along with a subsidiary of the Russian Energy Ministry.
The Associated Press contributed to this article