"We are hopeful that the United States does not make this strategic mistake," foreign ministry spokesman Bahram Qasemi was quoted as saying by Tasnim news agency in a news conference.
"If they do, Iran's reaction would be firm, decisive and crushing."
The day before Mohammad Ali Jafari the, the chief of the elite Iran Revolutionary Guards had vowed to equate the US Army with Daesh if the US puts them on the terror group list. He also stated that the United States was wrong about the pressure it put on Iran while negotiating on regional issues.
At the end of July 2017 the US imposed new sanctions on Tehran targeting its ballistic missile program. Iran responded to the US' unilateral move by increasing the funding of the program.
After Trump's first ever speech at the UN General Assembly which contained accusations and harsh rhetoric toward Iran, Tehran unveiled the Khorramshahr ballistic missile during a military parade dedicated to the annual Sacred Defense Week. For the sake of detente, Iran has long tried not to take any measures that could disturb the opposite side and expected the lifting of all financial and economic sanctions in return.