Tehran, Iran – Iranian authorities say the United States needs to do more if an agreement is to be made to end the war as they urge their supporters to maintain control of the streets.

The US delegation at Saturday’s marathon talks in Islamabad, Pakistan, “ultimately failed to gain the trust of the Iranian delegation in this round of negotiations”, said Mohammad Bagher Ghalibaf, the parliament speaker who led the Iranian team.

US President Donald Trump said on Sunday that the US Navy will immediately begin the process of “blockading any and all ships trying to enter, or leave, the Strait of Hormuz” in Iran’s southern waters. He also said the US military remains “locked and loaded” and will “finish up” Iran at the “appropriate moment”.

The fact that the Iranian delegation did not accede to Washington’s core demands of eliminating nuclear enrichment on Iranian soil and ending Iranian control over the Strait of Hormuz was welcomed by Iranian authorities on Sunday as they projected defiance.

Judiciary chief Gholam-Hossein Mohseni-Ejei thanked the delegation that went to Islamabad and said they “guarded the rights” of the supporters of Iran’s government, including paramilitary forces converging on main squares, streets and mosques in Tehran and other cities every night for more than six weeks.

When the delegations were engaged in the talks on Saturday night, a member of the aerospace division of the Islamic Revolutionary Guard Corps (IRGC) was shown by state television telling flag-waving supporters in downtown Tehran not to be concerned.

“If the enemy does not understand, we will make them understand,” the man who was wearing military attire and a black mask to conceal his identity said to cheers from the crowd, some of whom demanded more missile and drone attacks from the IRGC.

State television also said it was Trump, not Tehran, that wished to “restore his image” through the negotiations and his “excessive demands” were the reason the talks failed.

The Ministry of Foreign Affairs said it did not expect to reach an agreement after only one day of negotiations.

Multiple lawmakers in the hardliner-dominated parliament said they were happy that the talks did not yield results because they believed Iran had the upper hand in the war.

Hamidreza Haji-Babaei, the parliament speaker’s deputy, said the only thing acceptable to the establishment supporters who are on the streets is a United Nations Security Council resolution that would signal “surrender” for the US and lead to the lifting of sanctions against Iran and its leaders.

Amir Hossein Sabeti, a Tehran lawmaker affiliated with the Paydari faction of hardliners, said he was thankful to the negotiating team for “not backing away from red lines” and “there is no way left but to show resistance in the field against these evildoers and demons”.

More escalation ahead

This comes after some pro-state voices said they were disheartened by the abrupt announcement overnight into Wednesday of a two-week ceasefire and direct negotiations on ending the war with the US.

To assuage internal concerns, the Iranian delegation to Islamabad had more than 85 members, according to local media, including dozens of representatives from state-affiliated media and analysts close to different factions.

In addition to Ghalibaf, a former IRGC commander who advanced Iran’s missile programme, senior members of the team included Foreign Minister Abbas Araghchi, hardline diplomat Ali Bagheri Kani, Defence Council head and former security chief Ali Akbar Ahmadian and moderate central bank chief Abdolnasser Hemmati.

The talks on Saturday established that a diplomatic breakthrough was not close and that more escalation was likely, even if there is no immediate return to full-fledged fighting.

“What he [Trump] has been saying after the negotiations is just excessive talk. He is saying his wishes out loud,” Ebrahim Azizi, the head of the national security commission of Iran’s parliament, told state television on Sunday afternoon about Trump’s announced naval blockade and new threats.

The IRGC has threatened that it will respond to any passage of military vessels through the Strait of Hormuz with full force. It also rejected the US military’s announcement during the talks that two US warships had passed through the strait in preparation for an operation to clear naval mines blocking the strategic waterway.

Russian President Vladimir Putin told Iranian President Masoud Pezeshkian in a phone call on Sunday that he is ready to continue diplomatically facilitating a peace settlement in the Middle East.

Pezeshkian, who has been tasked mainly with working on domestic affairs, has supported continuity of the establishment and backing for Mojtaba Khamenei, the supreme leader who has not been seen or heard from outside of written statements since Israel and the US launched the war on February 28. His government announced that schools and universities will be held online, using a limited local intranet, until further notice.

Iran’s economy continues to suffer from chronic inflation with more jobs lost in 2026 as the state continues to impose a near-total internet shutdown.