Pezeshkian Heads to UN as Iran Warns of Retaliation Against New U.S. Strikes

By Daniel Harper | Senior U.S. Military, International Affairs & Geopolitical Correspondent
September 22, 2026

Pezeshkian UN General Assembly Visit Puts Diplomacy in the Middle of the War

Iranian President Masoud Pezeshkian left Tehran for New York on Tuesday to attend the 81st United Nations General Assembly, bringing Iran’s political message directly into an international forum while the military confrontation with the United States and Israel continues.

Before departing, Pezeshkian said he would defend Iran’s positions, discuss the suffering of the Iranian people and address what he described as crimes committed by Iran’s adversaries. He also pointed to a loss of trust surrounding negotiations.

Iranian Foreign Minister Abbas Araghchi had already arrived in New York. His arrival came as Tehran sought diplomatic contacts around the UN gathering and as Qatar continued efforts to keep communication channels open between Iran and the United States.

At the same time, Iranian military officials have warned that any new U.S. attack could trigger retaliation and a change in the scope of Iran’s military response. Reuters reported that Iranian military officials had warned of severe retaliation if Washington launched another attack.

The result is an unusual diplomatic picture. Iran is sending its president to the world’s largest international political forum while also warning that the conflict could widen if new strikes occur.

What Pezeshkian Is Expected to Say at the UN

The Pezeshkian UN General Assembly appearance gives Tehran an opportunity to present its case before representatives from nearly every UN member state. The General Assembly’s high-level debate began on September 22 and runs through September 28, giving leaders a major platform to address international conflicts and security issues.

Iranian officials have already indicated the themes they want to emphasize. Before leaving Tehran, Pezeshkian said Iran would present its position on the conflict and highlight the suffering of its population, alleged actions by its adversaries and the distrust created around negotiations.

Those statements provide a clearer indication of Tehran’s priorities than speculation about the president’s future speech. His UN address is expected to focus on Iran’s sovereignty, the consequences of the war and Tehran’s criticism of U.S. and Israeli military actions.

Iran is also likely to use the platform to defend its position on diplomacy. However, the exact language and proposals Pezeshkian will deliver should be judged from his actual remarks rather than predictions made before the speech.

The timing matters. The Iranian president is speaking while Washington is still applying military pressure and while Tehran continues to warn against additional attacks. His appearance therefore has both a diplomatic and political purpose.

Araghchi Arrives First as Iran Builds Its Diplomatic Channel

Araghchi’s arrival in New York gives Iran’s diplomatic team additional time to hold consultations before Pezeshkian’s appearance.

Iran’s Foreign Ministry said Araghchi arrived Monday and would lead diplomatic consultations during the General Assembly. Iranian officials also said he spoke with UN Secretary-General António Guterres after arriving in New York.

Araghchi’s role is important because foreign ministers often handle detailed diplomatic contacts around major international meetings. Those discussions can include regional governments, European officials, UN representatives and countries attempting to mediate between opposing sides.

Iran has also maintained contact with Qatar. Doha has played a mediation role in efforts involving Washington and Tehran, including attempts to reopen negotiations. That does not mean a new agreement has been reached.

Araghchi’s presence also gives Iran an opportunity to explain its position before and after Pezeshkian’s address. The two officials can therefore operate on parallel tracks: the president presents Tehran’s broader political message, while the foreign minister works through diplomatic contacts.

Iran’s earlier diplomatic efforts involving regional mediation and peace talks provide useful context for the role Araghchi is now expected to play in New York.

Iran Warns New U.S. Strikes Could Bring Retaliation

The diplomatic effort is unfolding alongside increasingly direct military warnings from Tehran.

Iranian military officials have warned that another U.S. attack could produce a stronger response. Reuters reported that Iran’s military said it had intelligence indicating a possible new American attack and warned that Tehran could alter its military strategies and targets if further action occurred.

Iran’s Revolutionary Guard has also warned Washington against further escalation. Such statements are official Iranian threats and should not be treated as confirmation that a future attack has already been planned or ordered.

The distinction is important. Governments routinely use military warnings to deter an opponent without necessarily revealing their actual operational plans.

There is also no verified basis for assuming that Iran has decided on a particular response to a future U.S. strike. The exact targets, weapons and operational plans remain matters that should not be inferred from public statements.

For Washington, however, the warnings create another layer of risk. Any new U.S. military action could carry the possibility of Iranian retaliation against American or allied interests in the region. At the same time, Tehran’s warnings are part of its effort to establish deterrence.

The situation therefore contains two separate questions. One concerns what Iran says it would do if attacked again. The other concerns what Washington actually decides to do next. Neither should be treated as settled.

Diplomacy and Military Readiness Are Moving Together

The central feature of the current Iran US conflict is that diplomacy has not stopped simply because military confrontation continues.

Pezeshkian is traveling to the United States for the UN. Araghchi is already in New York. Qatar continues to provide a communication channel, while Iran remains prepared for possible further military action.

That combination is not necessarily contradictory. States can maintain diplomatic contacts while keeping military forces on alert. In fact, communication can become more important when the consequences of miscalculation are high.

Previous efforts to negotiate between Washington and Tehran have shown how quickly diplomatic openings can become entangled with military developments. A new strike could undermine talks, while a credible diplomatic channel could provide governments with another way to communicate during a crisis.

President Donald Trump has also indicated that he is open to meeting Pezeshkian at the UN gathering, according to recent reporting. However, no confirmed Trump-Pezeshkian meeting should be treated as an established event unless both sides officially announce it.

The same caution applies to any suggestion that the UN visit itself represents a new peace process. Pezeshkian’s presence creates an opportunity for diplomacy, but it does not establish that negotiations will succeed.

Strait of Hormuz Keeps Energy Security at the Center

The Pezeshkian UN General Assembly visit is also taking place against a major maritime crisis around the Strait of Hormuz.

Hormuz is one of the world’s most important energy corridors. Disruption to tanker traffic can affect oil and gas supplies, shipping insurance, freight costs and energy markets far beyond the Gulf.

Current reporting indicates that maritime traffic has been heavily disrupted, although commercial activity has not simply disappeared. Reuters reported that Saudi Aramco had resumed exports through Hormuz, loading 14 million barrels onto seven supertankers, while overall exports remained below pre-conflict levels.

That distinction matters. Severe disruption can create major economic consequences without requiring the Strait to be completely closed.

Oil prices have also responded to changing expectations. Reuters reported that crude prices rebounded on Tuesday after four consecutive declines as investors considered the possibility of U.S.-Iran talks at the UN and monitored regional supply developments.

For markets, diplomacy and military risk can therefore push prices in opposite directions. Hope for negotiations can reduce immediate fears, while a new attack or further shipping disruption can quickly restore those concerns.

The wider impact of U.S.-Iran tensions on oil prices and the Strait of Hormuz remains one of the most important economic dimensions of the conflict.

What Happens After Pezeshkian’s UN Appearance?

The next stage will depend on what happens both inside the UN and outside it.

Pezeshkian’s speech will provide the clearest indication of how Tehran wants to frame the war before the international community. His comments on negotiations, military attacks and Iran’s future position will receive particular attention.

Araghchi’s diplomatic meetings will also matter. Any confirmed contact with U.S. officials, Gulf governments, European states or other mediators could indicate whether communication is becoming more active.

Washington’s response will be another major factor. Trump has shown interest in diplomacy while maintaining pressure on Tehran. A new U.S. strike, if ordered, could fundamentally change the diplomatic environment.

Iran’s military statements will also require close monitoring. If Tehran issues additional warnings, those statements should be distinguished from confirmed military operations.

Hormuz will remain another key indicator. Changes in tanker traffic, shipping security and energy exports could affect both regional governments and global markets.

The same applies to the Gulf states. Any new military incident could increase pressure on governments that are already dealing with threats connected to the wider conflict.

For now, Pezeshkian’s trip puts Iran’s diplomatic message directly before the international community at a moment when the military confrontation remains unresolved.

The Pezeshkian UN General Assembly appearance does not guarantee negotiations, and Iran’s retaliation warnings do not prove that another attack is imminent. What it does show is that Tehran is pursuing diplomacy while preparing for continued confrontation.

That dual approach will shape the next stage of the Iran US war. The key questions are whether diplomatic communication can remain open, whether Washington takes further military action and whether Iran responds if it does. Until those questions are answered, the conflict remains suspended between diplomacy and military pressure.