Iran greeted the re-imposition of US sanctions on Monday with air defence drills and a statement from President Hassan Rouhani that the nation faces a "war situation," raising Mideast tensions as America's maximalist approach to the Islamic Republic takes hold.
The sanctions end all economic benefits America had granted Tehran for its 2015 nuclear deal with world powers, though Iran for now continues to abide by the accord that saw it limit its enrichment of uranium.
While at the moment not threatening to resume higher enrichment, Iranian officials in recent months have made a point to warn the controversial process could resume at any time, faster than before.
The new American sanctions particularly hurt Iran's vital oil industry, a crucial source of hard currency for its anemic economy. Its national currency has plummeted over the last year, sending prices for everything from mobile phones to medicine skyrocketing.
"Today, Iran is able to sell its oil and it will sell," Rouhani vowed Monday as the sanctions kicked in.
However, the noose of American sanctions appeared to be tightening.
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Iranian officials, meanwhile, reported a cyberattack targeting the country's communication infrastructure, blaming the purported attack on Israel.
Iranian state television aired footage of air defense systems and anti-aircraft batteries in two-day military maneuvers underway across a vast stretch of the country's north. It included surface-to-air missiles shooting down a drone.
The drill was to continue through Tuesday.
Iranian army General Habibillah Sayyari said both the national army and the country's paramilitary Revolutionary Guard were taking part in the exercise.
Rouhani, meanwhile, pledged to government officials in comments aired on state TV that Iran would overcome the sanctions.
"We are in the war situation, " Rouhani said. "We are in the economic war situation. We are confronting a bullying enemy. We have to stand to win."
"Many countries from Europe to Russia and China have opposed the sanctions," Ghasemi told journalists, adding that Iranians "have experienced more extensive sanctions" and that they are "not a new issue."