President Donald Trump says Tehran has no plan to execute protesters, but still hasn't ruled out US military action against the country over its violent crackdown on anti-government demonstrators.
The US and UK are both reducing the number of personnel at the Al-Udeid air base in Qatar, while officials have told CBS, the BBC's US partner, that a partial American withdrawal is a precautionary measure.
Iran's airspace was closed to nearly all flights for five hours overnight, with several airlines announcing that they will reroute flights around Iran.
The Foreign Office has also temporarily closed the British embassy in Tehran, which will now operate remotely, a government spokesperson said.
Speaking from the White House on Wednesday, Trump said his administration had been told on good authority that the killing in Iran is stopping, and there's no plan for executions.
When questioned by a reporter, Trump said that very important sources on the other side had informed him of the developments, adding that he hoped the reports were true.
Initial demonstrations over the collapse of the Iranian currency began in late December, but swiftly expanded into a wider crisis of legitimacy for Iran's clerical leadership.
Trump had earlier threatened very strong action against Iran if the government executed protesters, after reports emerged that a 26-year-old man who had been arrested during the height of the demonstrations had been sentenced to death.
Erfan Soltani was scheduled to be executed on Wednesday, his family had told BBC Persian. They later told the Norway-based Kurdish human rights group Hengaw that his execution had been postponed.
Iranian authorities have reportedly failed to give Soltani's family any more information about his case, citing only that he had been arrested in connection with a protest.
The clothes shop owner was detained in the city of Fardis, just west of Tehran, last week.
Responding to reports of potential executions, Iran's Foreign Minister Abbas Araghchi said hanging is out of the question and there would be no hanging today or tomorrow.
Speaking to Fox News, he also warned the US president to not repeat the same mistake that you did in June, adding: If you try a failed experience, you will get the same result. In June 2025, the US bombed three of Iran's nuclear sites over fears Tehran could use them to build a nuclear weapon.
In addition to the temporary closure of the British embassy in Tehran, the US Mission to Saudi Arabia has advised its personnel and citizens to exercise increased caution and limit non-essential travel to any military installations in the region.
Italy and Poland have published statements urging their citizens to leave Iran, while Germany has issued a notice to air operators recommending that flights do not enter Iranian airspace, citing potential risk from escalating conflict and anti-aviation weaponry.
Trump has been reluctant to lend his support to any challengers to Iran's Supreme Leader, Ayatollah Ali Khamenei, saying that we aren't really up to that point yet in an interview with Reuters on Wednesday.
Trump also said that the Iranian government could fall due to the protests, but added that any regime can fail.
The US-based Human Rights Activists News Agency (HRANA) said it had so far confirmed the killing of 2,435 protesters, as well as 13 children. The group said a further 882 deaths remain under investigation.
