U.S. President Donald Trump said Iran's Supreme Leader Ayatollah Ali Khamenei should be very careful about what he says after Khamenei harshly criticized the United States in a Friday prayers sermon in Tehran.
"The so-called 'Supreme Leader' of Iran, who has not been so Supreme lately, had some nasty things to say about the United States and Europe," Trump said in a tweet.
"Their economy is crashing, and their people are suffering. He should be very careful with his words!"