Iran has begun a week-long funeral procession for its former Supreme Leader, Ayatollah Ali Khamenei, who was killed four months ago in strikes launched by the US and Israel. The ceremonies, expected to draw between 15 million and 20 million mourners, are being described by Iranian officials as the "funeral of the century" and represent one of the largest logistical undertakings in the Islamic Republic's history. The scale of the event is intended to send a message of defiance to the world and to Iran's enemies, asserting that the regime has not only survived the conflict but will immortalize its slain leader as a symbol of its resilience, particularly as the event coincides with the 250th American Independence Day celebrations.

The funeral procession will span across five cities in two countries, starting with Khamenei's body lying in state in Tehran's Grand Mosalla from Friday. On Wednesday, his body will travel to Najaf, Iraq, for a procession at the shrine of Imam Ali, and then to Karbala for further ceremonies. The final burial will take place on Thursday in Mashhad, Iran, at the Imam Reza Shrine, his hometown and a crucial pilgrimage site. Representatives from approximately 30 countries, including Pakistan's Prime Minister Shehbaz Sharif, are anticipated to attend the ceremonies.

The elaborate funeral is also seen as a test of Iran's theocracy's ability to garner mass public support, especially following a ceasefire with the United States. Despite the US-Israel war and decades of economic hardship, Tehran is investing heavily in the event, which includes baking 50 million pieces of bread to feed mourners and mobilizing extensive medical and security resources. The new Supreme Leader, Mojtaba Khamenei, who has not been seen publicly since his father's death and is believed to have been wounded in the same attack, has not confirmed his public appearance during the ceremonies.

Sina Toossi, a senior nonresident fellow at the Center of International Policy, noted that Khamenei's assassination has made him far more powerful symbolically in death, framing him as a martyred religious authority akin to revered Shia saints. This narrative, along with orchestrated public displays, aims to consolidate support and project a defiant stance against perceived Western aggression, particularly as the country observes a fragile ceasefire with the United States after a preliminary deal to halt their conflict was signed in June.