Iran is getting worried about Trump
Iran's bluster appears to be backfiring on them. Their first response to Trump's immigration order was to cut off US visitors, then they realized they needed them if they were going to rebuild their oil and gas infrastructure and buy new airplanes. It also would cut off their supply of potential hostages. Iran cannot afford a confrontation with the US and it better back off its harassment of US Navy vessels too.
Gloom and dread can be felt across the Iranian capital, and some people blame not only President Trump but also their own leaders.