Washington, May 2 -- The United States has intensified its action against Iran's petroleum export network, announcing new sanctions targeting companies, individuals, and vessels, which the Washington has accused of enabling the country's illicit oil trade and funds being used to destabilize regional activities and terrorism.

The Department of State said the latest measures focus on disrupting sophisticated evasion systems used to move sanctioned Iranian crude oil, including ship-to-ship transfers and so-called "dark fleet" operations that obscure the origin and destination of cargo.

The U.S. government said the measures are part of a broader strategy to intensify economic pressure on Iran by targeting its energy export lifeline and the in...