The United States has imposed a new round of Iran-related sanctions, according to a notice published on the U.S. Treasury Department’s website, as Washington steps up pressure on Tehran amid escalating tensions.

The sanctions, issued by the Trump administration on Thursday, appear to target a network of shipping, trading and energy companies accused of supporting Iran’s economy and helping it circumvent existing restrictions. The Treasury Department did not immediately provide detailed public explanations for each designation.

U.S. officials have repeatedly said the sanctions are intended to limit Iran’s ability to generate revenue for activities Washington views as destabilising, including its nuclear programme, regional military influence and support for allied militant groups.

The move comes against the backdrop of rising tensions between the United States and Iran, fuelled by Iran’s domestic unrest, Tehran’s threats against U.S. interests in the region, and warnings from President Donald Trump that Iran is crossing established “red lines.”

Iran has consistently condemned U.S. sanctions as illegal and harmful to ordinary citizens, accusing Washington of economic warfare. Previous rounds of sanctions have targeted Iran’s oil exports, financial sector and access to international markets.

Analysts say the latest measures signal continued reliance on economic pressure as a key tool of U.S. policy toward Iran, even as the risk of military confrontation remains elevated.