One analyst says Iran's missile strike against U.S. forces in Iraq was “the smallest attack that Iran could carry out while at the same time being able to say they got revenge."
Iranian state television says 32 people have been killed and 190 others injured in a stampede that erupted at a funeral procession for a general slain in a U.S. airstrike.
Late Saturday, U.S. Secretary of State Mike Pompeo directly blamed Iran for the Saudi attack on Twitter, without offering evidence to support his claim.
In Iran, Supreme Leader Ayatollah Ali Khamenei warned that while Tehran doesn't seek nuclear weapons, "America could not do anything" to stop Iran if it did.
Pompeo repeated long-standing U.S. accusations that Iran is bent on destabilizing the region, but he also held out the possibility of talks as President Donald Trump has suggested.
The Trump administration lashed out at some of America's closest traditional allies on Thursday, accusing Britain, France and Germany of trying to "break" U.S. sanctions against Iran and calling on European nations to join the United States in withdrawing from the landmark 2015 Iranian nuclear deal.
Iranians on Monday shrugged off the possibility that a bellicose exchange of words between President Donald Trump and his Iranian counterpart could escalate into military conflict, but expressed growing concern America's stepped-up sanctions could damage their fragile economy.