Ayatollah Ali Khamenei on Tuesday dismissed the U.S. decision to put Iran "on notice" over its missile tests and called President Donald Trump the "real face" of American corruption.

In his first speech since Trump's inauguration, Iran's supreme leader called Iranians to take part in demonstrations on Friday, the anniversary of Iran's 1979 Islamic revolution, to show they were not frightened of American "threats."

"We are thankful to (Trump) for making our life easy as he showed the real face of America," Khamenei told a meeting of military commanders in Tehran, according to his website.