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Iran’s hardline parliament speaker and key negotiator Mohammad Bagher Ghalibaf warned that Tehran would not honor its commitments under a newly signed memorandum with the U.S. if Washington fails to uphold its side of the deal, according to the media arm of Iran’s Islamic Revolutionary Guard Corps. 

"If the United States does not honor its commitments, there is no way Iran will honor its own commitments," Ghalibaf said, according to the outlet.

Ghalibaf’s warning was echoed Thursday by Islamic Revolutionary Guard Corps Quds Force commander Esmail Qaani, who threatened the U.S. in remarks translated by MEMRI TV, saying, "Americans should know their place and avoid confronting the Muslims." 

Qaani added that "Trump is trembling" and warned that the U.S. "should fear not only Hormuz and Bab al-Mandeb, but many other locations as well."

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The warnings came after President Donald Trump and Iranian President Masoud Pezeshkian Wednesday digitally signed a copy of the memorandum aimed at ending the war and resuming the flow of traffic through the Strait of Hormuz.

The memorandum gives Iran major economic relief while leaving some of the most difficult nuclear questions for a final agreement to be negotiated throughout the next 60 days. Under the 14-point plan read by a senior U.S. official, Washington agreed to begin lifting its naval blockade, work with regional partners on a $300 billion reconstruction and development plan for Iran, and terminate U.S., U.N. and other sanctions on an agreed schedule as part of a final deal. 

The memorandum also says all licenses, waivers and permissions needed for related financial transactions would be granted by the United States.

In return, Iran reaffirmed that it "shall not procure or develop nuclear weapons," and the two sides agreed to resolve the fate of Iran’s stockpiled enriched material under a future mechanism, with the minimum method being on-site down-blending under International Atomic Energy Agency supervision. 

The agreement defers many of the hardest questions — including how to wind down Iran’s nuclear program — until the 60-day negotiation period for a final deal.

But the Iranian figure at the center of the deal is not a diplomat known for moderation. 

Ghalibaf, a former Islamic Revolutionary Guard Corps commander and longtime regime insider, has threatened American forces, vowed Trump would "pay the price" and built his career through loyalty to Iran’s security establishment.

The new warning underscored what experts say is the central risk of the agreement: Washington may be entering a deal with officials who can enforce Iran’s commitments, but who have shown little sign of changing the regime’s long-term posture toward the U.S., Israel or the region. 

Ghalibaf, 64, is a product of Iran’s security establishment. He rose through the ranks of the Islamic Revolutionary Guard Corps during the Iran-Iraq War, eventually becoming commander of the Islamic Revolutionary Guard Corps air force. 

He later served as Iran’s national police chief, overseeing internal security forces responsible for suppressing protests, including the 1999 student uprising, alongside Qassem Soleimani.

After transitioning into politics, Ghalibaf attempted to run for president multiple times but failed. He instead built his career through loyalty to the system, serving as Tehran’s mayor for more than a decade before becoming speaker of parliament in 2020.

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"Ghalibaf doesn’t have an independent line. His strength is that he is a ‘yes man,’" Beni Sabti, an Iran expert at the Institute for National Security Studies, previously told Fox News Digital. "If he is told to shake hands with Special Envoy Steve Witkoff, he will do it. If he is told to escalate, he will. It is not about moderation, it is about who gives the orders."

"His name has also been linked to multiple corruption allegations, including misuse of oil revenues and sanctions evasion networks involving his family. His sons have reportedly been involved and are under sanctions," Sabti said, adding, "There have also been public scandals involving family members traveling abroad and making luxury purchases, including widely circulated images of them arriving with numerous high-end Gucci suitcases."

Behnam Ben Taleblu, a senior fellow at the Foundation for Defense of Democracies, said the image of Ghalibaf at a signing ceremony with a senior U.S. official would be a propaganda victory for the regime.

"There was a time when the Islamic Republic would have been terrified to be seen signing such a thing," Ben Taleblu told Fox News Digital. "Post-war, this is a sign of the regime’s opportunism, and no one identifies that opportunism better than someone like Ghalibaf, who comes from the IRGC, who is a corrupt politician and is a wheeler and dealer."

But Taleblu warned that Washington should not confuse Ghalibaf’s opportunism with moderation. 

"The mirage is the myth of Iranian military moderation and the myth that, with time, this regime will integrate and put aside all the things that have kept it on the sidelines for so long," he said. "Transforming Iran via a deal — that is a huge lift."

Ghalibaf’s wartime statements reflect the hardline posture inside Iran’s leadership. In remarks aired on Iranian television on Jan. 12 and translated by MEMRI, he warned that U.S. forces would face catastrophic consequences if they confronted Iran.

"Come, so you can see what catastrophe befalls American bases, ships and forces," he said, adding that American troops would be "burned by the fire of Iran’s defenders."

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More recently, he warned that "the blood of American soldiers is the personal responsibility of Trump," and vowed Iran would "settle accounts with the Americans and Israelis," adding that "Trump and Netanyahu crossed our red lines and will pay the price."

John Hannah, a senior fellow at the Jewish Institute for National Security of America and a former national security adviser to Vice President Dick Cheney, said Ghalibaf’s expected role reflects the reality of who holds power inside Iran. 

"If you’re going to sign an agreement with Iran, those are the forces in charge and calling the shots, presumably with the approval of the new Supreme Leader," Hannah told Fox News Digital. "If the U.S. harbors hope that Iran will ever implement any of their obligations under the MOU, these are the people — odious as they are — capable of making it happen."

But Hannah said the central question is whether Iran’s leadership sees compliance as useful, or whether the agreement is simply a tactical pause.

"The big question is whether they see it in their interest to do so, or are they only buying time, rebuilding their power and preparing for the next round of conflict," he said.

Ben Taleblu was even more blunt, warning that even a seemingly favorable agreement would not change the nature of the regime.

"Even if you’ve got the perfect deal, with this kind of regime, with this kind of mentality, they will escalate," he said. "I thought we would have learned by now what the regime did after the JCPOA. It built a vast missile arsenal. It literally built an empire of terror proxies that took Israel years of blood, effort and money to dismantle, backed by American support."

"If we engage in pay-to-play with these guys," he added, "I’m sorry to sound the alarm bell like this — but something tells me this is bad either way."

Fox News Digital reached out to the White House for comment. 

Ukraine launched one of its largest drone attacks on Moscow since the start of Russia’s full-scale invasion, striking a major oil refinery in the Russian capital and sending thick black smoke over parts of the city, according to Russian officials and multiple reports.

The Moscow Oil Refinery in the Kapotnya district — one of the capital region’s key fuel facilities — was hit overnight Thursday, marking the second reported strike on the site in three days. Videos circulating online showed large flames and black smoke rising from the facility, while Russian officials said air defenses intercepted waves of incoming drones.

Kyiv says its strikes deep inside Russia are evidence that it is turning the tide of the war — a message President Volodymyr Zelenskyy took this week to President Donald Trump and other G7 leaders at a summit in France. 

The latest strikes underscore a new phase of the war, with Ukraine increasingly able to hit high-value targets deep inside Russia while Moscow struggles to prevent drones from reaching politically sensitive and economically important sites near the capital. 

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"This is pure hell, I’ve never felt such terror," one Moscow resident said after the attack, according to East2West News. 

Another resident, according to the outlet, asked: "Why won’t this madman stop his crazy and pointless war and end the death and destruction?"

East2West Russian news agency also reported that a heavy security presence was deployed around the Kremlin, with Red Square sealed off and machine-gunners positioned on towers, ramparts and near Bolsheviks' founder Vladimir Lenin’s Mausoleum. 

Moscow Mayor Sergey Sobyanin said air defenses shot down more than 130 drones approaching the city. Russia’s Defense Ministry claimed more than 550 Ukrainian drones were intercepted overnight across several regions, though battlefield claims from either side could not be independently verified.

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The attack disrupted daily life across Moscow, forcing temporary flight suspensions at major airports and traffic restrictions near the refinery. Russian officials said debris also fell near the Sadovod shopping center, damaging a building. The Moscow region governor said 16 people were injured in the broader attack.

Ukraine’s Foreign Minister Andrii Sybiha mocked the confusion in Moscow, writing on X: "One of the most popular questions asked by Muscovites this morning is ‘What is going on?’ I can answer. Your country started a war of aggression against ours. For years, it has been killing our people. Now that you know what’s going on, ask Putin when he is planning to end it."

The strike appeared to expose vulnerabilities in Moscow’s heavily promoted air defense network, bringing the war deeper into the Russian capital even as the Kremlin continues its long-range missile and drone attacks on Ukrainian cities.

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The Kapotnya refinery is a strategically significant target. A prior Ukrainian drone strike damaged part of the refinery in recent days, according to Reuters, and forced a halt in some operations. 

East2West reported that the refinery supplies 40% of Moscow’s fuel market and 70% of the surrounding region’s gasoline and aviation fuel needs.

Ukraine increasingly has targeted Russian energy infrastructure in an effort to undermine Moscow’s war machine and increase the domestic cost of the war inside Russia. Kyiv has described such strikes as part of its campaign of "long-range sanctions" against Russia’s oil and military infrastructure.

The Moscow attack came as President Vladimir Putin hosted leaders from the 10-member Association of Southeast Asian Nations bloc in Kazan, Russia. Ukraine also reportedly struck targets linked to Russia’s supply routes to occupied Crimea, including road and rail infrastructure. Ukrainian officials have repeatedly said isolating Crimea is a key military objective as Kyiv seeks to weaken Russia’s hold on the peninsula, which Moscow illegally annexed in 2014.

Russia, meanwhile, continued its own strikes on Ukraine. Ukrainian officials reported Russian attacks on energy and oil facilities in the Poltava region and near Kyiv.

East2West reported that Russia was moving Tu-95MS strategic bombers across the country, raising concerns that Moscow could be preparing another major strike on Ukraine in the coming days.

Zelenskyy has said the war could end if Putin agrees to genuine peace talks, while accusing Moscow of prolonging the conflict and using negotiations as cover for continued attacks.

Reuters contributed to this report.