The United Statesinfo-icon announced new sanctions against Iraninfo-icon on Tuesday over its ballistic missileinfo-icon programme and what it called Tehraninfo-icon's support for terrorist groups in the Middle Eastinfo-icon.

The sanctions announced by the State Department target 18 individuals or entities described as supporting Iran's ballistic missile programme or the elite Republican Guard.

The announcement came a day after the United States certified that Iran was complying with the landmark nuclear deal signed two years ago with the United States and other worldinfo-icon powers, but also warned it was preparing new sanctions.

"The United States remains deeply concerned about Iran's malign activities across the Middle East which undermine regional stability, security, and prosperity," State Department said.

It cited Iran's support for Hezbollahinfo-icon, Hamas, the regime of Syrian President Bashar al-Assad and Huthi rebels in Yemeninfo-icon fighting a USinfo-icon-backed coalition led by Saudi Arabiainfo-icon.

Meanwhile, Iranian Foreign Minister Mohammad Javad Zarif has said that the new sanctions against Tehran by the US are damaging already frayed Tehran-Washington ties.

Zarif made the remarks on Tuesday in an interviewinfo-icon with CBS after the administration of US President Donald Trumpinfo-icon said it was imposing new economic sanctions against Iran over the Islamic Republic's missile program.

"It violates the spirit of the deal. We will look at it and see whether it violates the letter of the deal, and we will act accordingly," said Zarif.