TEHRAN — Iran’s hard-line authorities organized nationwide rallies on Friday to denounce the Trump administration’s withdrawal from the 2015 nuclear agreement, burning American flags and warning that Europe might further sabotage the accord.
The reaction reflected the view held by many hard-liners that the American withdrawal had vindicated their suspicions that Westerners were treacherous.
The anger on display in Tehran and other cities also reinforced the possibility that Iran would now abandon the agreement as well, restarting the nuclear-fuel enrichment that it had halted.
Ayatollah Ahmad Khatami, a well-known hard-liner who leads the Friday Prayer services in Tehran, admonished fellow citizens against making any deals with foreigners “since they cannot be trusted.”
In his sermon, broadcast on state television, Ayatollah Khatami also criticized Iranian politicians who have looked toward Europe to preserve the nuclear agreement, arguing that the Europeans, too, have broken promises.
The outpouring of anger, in demonstrations organized around the country, was the most strident so far to President Trump’s announcement on Tuesday that he was abandoning the nuclear agreement reached with Iran and other major powers three years ago.
The agreement relaxed or ended many economic restrictions on Iran in return for its verifiable pledges to never make nuclear weapons, including a freeze on nuclear fuel production for at least 15 years. Mr. Trump called the agreement too weak and described it as a shameful giveaway to Iran by his predecessor, Barack Obama.
Mr. Trump’s announcement restored onerous American sanctions on Iran, including penalties for foreign companies that do business with that country. His announcement was widely criticized around the world but drew praise from Iran’s regional enemies, Israel and Saudi Arabia.
While European governments have said they want to preserve the accord, the participation of the United States was widely considered to be crucial to its survival.
Even before Mr. Trump announced the pullout, non-American businesses were wary about making any financial commitments in Iran, fearful of such an outcome.
Many Iranians, who had hoped the nuclear accord would bring a flood of investment and business to the country of 80 million, have been deeply disappointed.
Reminding Iranians of this point, Ayatollah Khatami said Europeans had been expected to invest in Iran after the nuclear agreement took effect but most never did. He exhorted listeners to shout “Death to America!” and “Death to Israel!”
In response to what Israel has described as its aerial assaults on Iranian bases in Syria, Ayatollah Khatami also said that Iran would “rob