Iran Nuclear Talks

US targets 'vast network' for evading Iran sanctions

The Trump administration moved Tuesday to break up a group of Iranian-linked companies that has transferred around $1 billion to Iran in violation of U.S. sanctions on the country.

The Treasury announced it had hit a "vast network" of 25 people, firms and Iranian government agencies with sanctions for evading penalties the U.S. put in place last year after withdrawing from the 2015 Iran nuclear deal. The sanctions freeze any assets they may have in U.S. jurisdictions and bar Americans from doing business with them. But they also open any foreign company or person to U.S. sanctions if they do business with the targeted entities.

The action identifies four firms...