Ali Khamenei, who served as Iran’s supreme leader until his assassination in a US-Israeli operation in February 2026, will finally be laid to rest today. His burial brings a week of public mourning ceremonies and processions to an end, and comes as hostilities between the US and Iran are escalating again.Islamic tradition calls for the prompt burial of the deceased. Iran’s first supreme leader, Ayatollah Ruhollah Khomeini, was buried within three days of his death in 1989. Qasem Soleimani, an Islamic Revolutionary Guard Corps commander who was assassinated by a US strike in 2020, was also laid to rest within a week.The extended postponement of Khamenei’s funeral, while initially delayed by the war, was a deliberate departure from established customs. His funeral has been transformed into far more than a state ceremony. It has been an orchestrated political and diplomatic event designed by the Islamic Republic to provide maximum advantage.The primary objective for Iran’s leadership was to demonstrate their sustained public support and, hence, legitimacy. According to Iranian officials, more than 15 million people had already taken part in the funeral processions by the third day of the ceremonies. Aerial footage also showed lines of worshippers attending Khamenei’s funeral prayer at the Jamkaran Mosque on July 7, with crowds stretching 25km to a holy shrine in the city of Qom.A clear intention of the widely broadcast mass mourning was to counter narratives from hawkish Iranian opposition, western and Israeli voices who have been suggesting that the Iranian public is eager for regime change. In doing so, they have sought to weaken the justification for the strike that killed Khamenei.Persuading such large numbers of Iranians to attend the ceremonies could have been a challenge. Iranian society is still reeling from the trauma inflicted by the January 2026 protest crackdown, in which thousands of people were killed. Iran is also affected by persistent economic hardship. Yet Iran’s leadership seems to have succeeded in drawing in segments of the population beyond government loyalists.By organising funeral processions in Iranian cities beyond the capital of Tehran, as well as in neighbouring Iraq, the Islamic Republic also showcased its enduring powers of mobilisation and its resilient regional network. Managing crowds on this scale demands an enormous logistical effort, including refreshments, shelter and transportation for participants. Signalling defiance in the face of US and Israeli aggression was the government’s second key goal. Chants of “Death to America” and “Death to Israel” by thousands of mourners were meant to convey to Washington and its allies that Iran will not yield and will seek revenge for the killing of its leader. These chants also sought to convey the message that negotiators will not compromise on core elements of Iran’s “resistance doctrine” – its strategy of ideologically and practically resisting western powers and Israel.However, in some respects, the government fell short in its hope for a display of national unity. Observers noted the abrupt departure from the funeral procession of Hassan Khomeini, the grandson of Iran’s first supreme leader. Khomeini seems to have been offended by a verse recitation which belittled him in comparison to the slained leader.The conspicuous absence of former Iranian presidents Hassan Rouhani and Mohammad Khatami at the private funeral procession at the Mosalla Mosque in Tehran was another taint on the image of national unity. This was later complemented by sharp verbal attacks against the current Iranian president, Masoud Pezeshkian, and the foreign minister, Abbas Araghchi, by mourners and hardline figures. Their anger stems from the fact negotiations with the US are advancing despite the declared “principled opposition” policy of the new supreme leader, Mojtaba Khamenei. Iran’s funeral diplomacyNo western government figures were invited to the funeral. But invitations were extended beyond government officials for some regional countries.From Afghanistan, for example, opposition figures such as Ahmad Massoud of the National Resistance Front and Mohammad Mohaqiq, chairman of the People’s Islamic Unity Party of Afghanistan, attended the funeral alongside a delegation sent by the ruling Taliban regime.Each delegation from more than 70 countries was welcomed by a carefully chosen Quranic verse reflecting its standing in Tehran’s foreign policy calculus. The Saudis were greeted with the verse: “There has already been for you a sign in the two armies which met in battle.” This was widely interpreted as a pointed reminder of their regional rivalry despite efforts in recent years to stabilise ties. Pakistan received a more positive verse: “And say, ‘My Lord! Grant me an honourable entrance and an honourable exit and give me a supporting authority from yourself’,” alluding to its mediation efforts throughout the war. Even delegations from non-Muslim powers such as China and Russia were granted this distinctive, if unusual, hospitality.Khamenei’s funeral was designed as a powerful political and diplomatic tool to project defiance and continued resistance against what Iran has called “global arrogance”. The government aimed to demonstrate its legitimacy, regional reach, public support and continued mobilising capacity despite the isolation efforts of its enemies.This mission seems to have been accomplished. Millions of mourners attended Khamenei’s funeral across Iran and Iraq. Huge crowds were managed successfully without any serious incident, despite high temperatures and the threat of renewed US attacks. And, perhaps most importantly, all of this has been reflected in media coverage worldwide.Marzieh Kouhi-Esfahani does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.