Addressing the issue at a news conference, foreign ministry spokesman Saeed Khatibzadeh also lashed out at the "insanity" of the latest US sanctions against banks in the Islamic republic.
On Sunday the "historic defeat of the United States will be realised, and that came to be despite its attempts, trickery and extrajudicial moves," Khatibzadeh said.
"Iran again showed that the United States is not as all-powerful as it says," he added.
The embargo on the sale of arms to Iran is due to start expiring progressively from October 18, under the terms of a UN resolution that blessed the 2015 nuclear deal between the Islamic republic and world powers.
Washington suffered a setback in August when it failed to win support from the United Nations Security Council to indefinitely extend the embargo.
President Donald Trump unilaterally withdrew the United States from the nuclear deal in 2018 before reimposing US sanctions on Iran. (Read More)
