Iran is preparing for a dayslong funeral procession for Supreme Leader Khamenei, who has died amid ongoing conflict. The country's theocratic leadership expects millions of people to flood the streets of Tehran starting Saturday in a display reminiscent of the funeral of the late Supreme Leader Ayatollah Ruhollah Khomeini in 1989. This large-scale public mourning event underscores the significance of Khamenei's role in Iran's political and religious hierarchy.

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