Iran is warning the United States against designating its Revolutionary Guards Corp as a terrorist group and says US regional military bases will be at risk if new sanctions are passed.
"As we've announced in the past, if America's new law for sanctions is passed, this country will have to move their regional bases outside the 2,000 km range of Iran's missiles," Guards' commander Mohammad Ali Jafari said, according to state media.
US President Donald Trump will announce new US responses to Iran's missile tests, support for "terrorism" and cyber operations as part of his new Iran strategy, the White House said on Friday.
"If the news is correct about the stupidity of the American government in considering the Revolutionary Guards a terrorist group, then the Revolutionary Guards will consider the American army to be like Islamic State all around the world particularly in the Middle East," Mr Jafari added.
The website for state TV reported Mr Jafari as adding that the United States was mistaken if it thought it could pressure Iran into negotiating on regional issues.
The Revolutionary Guards (IRGC) are Iran's most powerful internal and external security force. The Quds Force, the IRGC's foreign espionage and paramilitary wing, and individuals and entities associated with the IRGC are on the US list of foreign terrorist organisations, but the organisation as a whole is not.
Iran sees the Sunni Muslim militants of Islamic State as an existential threat to the Islamic Republic where the majority of the population are Shi'ites.
On June 7, Islamic State claimed an attack on Tehran's parliament and the mausoleum of Ayatollah Ruhollah Khomeini, the founder of the Islamic Republic, killing 18 people. The Guards fired missiles at Islamic State bases in Syria on June 18 in response.