WASHINGTON — President Donald Trump has been briefed on strong options as he weighs whether to order a US military response against the Iranian government over a violent crackdown on protests that have left more than 600 people dead, but is holding off for now after receiving messages from Tehran, the White House said on Monday.

The White House position on the protests came hours after Trump announced on social media that he would slap 25% tariffs on countries doing business with Tehran “effective immediately”—his first action aimed at penalising Iran for the protest crackdown.

“Effective immediately, any Country doing business with the Islamic Republic of Iran will pay a Tariff of 25% on any and all business being done with the United States of America,” Trump wrote in a post on Truth Social. “This Order is final and conclusive" he added.

The announcement appears to mean goods from China, a major trading partner of both Iran and the United States, would become significantly more expensive to import.

Besides China, the United Arab Emirates, Turkey, Brazil and Russia are among the economies that do business with Tehran. The White House declined to offer further comment or details about the president’s tariff announcement.

Trump has repeatedly threatened Tehran with military action if his administration finds the Islamic Republic is using deadly force against anti-government protesters, a red line Washington says Iran is “starting to cross” and has left Trump and his national security team weighing “very strong options.”

Media reports indicate that Pentagon officials have discussed long-range missile attacks, as well as cyber operations and psychological campaign responses.

According to White House press secretary Karoline Leavitt, Trump is also exploring messages from the Iranian officials.

While there are scant details on Iran’s outreach for talks, Leavitt confirmed on Monday that Trump's special envoy, Steve Witkoff, will be a key player engaging Tehran.

News about talks between Washington and Tehran first emerged on Sunday when Trump told reporters that a “meeting is being set up” with Iranian officials but cautioned that “we may have to act because of what’s happening before the meeting.”

Iran, through the country’s parliamentary speaker, has warned that the US military and Israel would be “legitimate targets” if Washington uses force to protect demonstrators, while the foreign minister, Abbas Araghchi, has said Tehran is open to talks but remains "prepared for war." — Agencies