The drill, which comes in the waning days of high tensions with US President Donald Trump's administration, was conducted in the country's central desert region.
Desert locusts had attacked more than 200,000 hectares (494,000 acres) of orchards and farmland in seven of Iran's 31 provinces
ISI: bridge gives 'capability of conducting attacks from Iraq'
U.S. Secretary of State Mike Pompeo, a strident Iran hawk, has advocated for the change in U.S. policy as part of the Trump administration's hardening posture toward Tehran.
Defense Minister Avigdor Liberman said the jet is "a response to economic distress."
Iran has more advanced missiles which it did not use.
There have been periodic confrontations between Iran's and the US's militaries in the Gulf - a major trade route for oil - in recent years.
German report says: Iran spreading atomic, biological or chemical weapons of mass destruction.
"We [Iran] will increase our military power as a deterrent. We will strengthen our missile capabilities ... We will not seek permission from anyone to defend our country."
While the sanctions are meant to punish the two countries, they appear to be pushing them together.