The rallies, which took place in cities across the country, were organized to express support for Iran's Islamic Republic.
According to Russian state-owned news agency TASS, Iranian President Masoud Pezeskian participated in the Tehran demonstration.
Parliament Speaker Mohammad Baqer Qalibaf, First Vice President Mohammad Reza Aref, and Foreign Minister Abbas Araqchi also attended.
RIA Novosti echoed TASS’s coverage, highlighting remarks made by Qalibaf, who addressed US President Donald Trump, stating that Iran is prepared to deliver a "lesson they will not forget" if the US decides to attack the Islamic Republic.
He declared, "I heard that you have threatened Iran. The defenders of Iran will give you a lesson you will not forget. Come and see how all your potential in the Middle East will be destroyed."
Sputnik News also reported on Qalibaf’s warning, urging Trump not to believe the lies he is told and reiterating that Iran's defenders will deliver a "lesson they will not forget."
Izvestia, a Russian newspaper, noted the strong reaction from Tehran to statements made by Trump.
Political analyst Dmitry Beredizhe, speaking to Izvestia, stated that Trump’s remarks regarding a message from Iran about negotiations indicated Washington’s intention to proceed with action against Tehran before any potential talks. He added that this approach continues the “dual-track strategy” involving negotiation coupled with pressure through sanctions, cyberattacks, and intelligence operations.
Beredizhe asserted that any US military action would escalate the conflict to a regional level, jeopardizing security infrastructure in the Persian Gulf and US assets in the Middle East. He concluded that diplomacy is the only viable path to de-escalate the situation and that diplomatic channels could contribute to resolving the conflict.