U.S. President Donald Trump and top Iranian officials exchanged dueling threats Friday as widening protests swept across parts of the Islamic Republic, further escalating tensions between the countries after America bombed Iranian nuclear sites in June.

At least seven people have been killed so far in violence surrounding the demonstrations, which were sparked in part by the collapse of Iran’s rial currency but have increasingly seen crowds chanting anti-government slogans.

The protests, now in their sixth day, have become the biggest in Iran since 2022, when the death of 22-year-old Mahsa Amini in police custody triggered nationwide demonstrations. However, the demonstrations have yet to be countrywide and have not been as intense as those surrounding the death of Amini, who was detained over not wearing her hijab, or headscarf, to the liking of authorities.

Trump post sparks quick Iranian response

Trump initially wrote on his Truth Social platform, warning Iran that if it “violently kills peaceful protesters,” the United States “will come to their rescue.”

“We are locked and loaded and ready to go,” Trump wrote, without elaborating.

Shortly after, Ali Larijani, a former parliament speaker who serves as the secretary of Iran’s Supreme National Security Council, alleged on the social platform X that Israel and the U.S. were stoking the demonstrations. He offered no evidence to support the allegation, which Iranian officials have repeatedly made during years of protests sweeping the country.

“Trump should know that intervention by the U.S. in the domestic problem corresponds to chaos in the entire region and the destruction of the U.S. interests,” Larijani wrote on X, which the Iranian government blocks. “The people of the U.S. should know that Trump began the adventurism. They should take care of their own soldiers.”

Larijani’s remarks likely referenced America’s wide military footprint in the region. Iran in June attacked Al Udeid Air Base in Qatar after the U.S. strikes on three nuclear sites during Israel’s 12-day war on the Islamic Republic. No one was injured though a missile did hit a radome there.

Ali Shamkhani, an adviser to Supreme Leader Ayatollah Ali Khamenei who previously was the council’s secretary for years, separately warned that “any interventionist hand that gets too close to the security of Iran will be cut.”

“The people of Iran properly know the experience of ‘being rescued’ by Americans: from Iraq and Afghanistan to Gaza,” he added on X.

Iran’s hard-liner parliament speaker Mohammad Bagher Qalibaf also threatened that all American bases and forces would be “legitimate targets.”

Iran’s Foreign Ministry spokesperson Esmail Baghaei also responded, citing a list of Tehran’s longtime grievances against the U.S., including a CIA-backed coup in 1953, the downing of a passenger jet in 1988 and taking part in the June war.

The Iranian response came as the protests shake what has been a common refrain from officials in the theocracy — that the country broadly backed its government after the war.

Trump’s online message marked a direct sign of support for the demonstrators, something that other American presidents have avoided out of concern that activists would be accused of working with the West. During Iran’s 2009 Green Movement demonstrations, President Barack Obama held back from publicly backing the protests — something he said in 2022 “was a mistake.”

But such White House support still carries a risk.

“Though the grievances that fuel these and past protests are due to the Iranian government’s own policies, they are likely to use President Trump’s statement as proof that the unrest is driven by external actors,” said Naysan Rafati, an analyst at the International Crisis Group.

“But using that as a justification to crack down more violently risks inviting the very U.S. involvement Trump has hinted at,” he added.