Iran prepared Friday for the dayslong funeral of the late Supreme Leader Ayatollah Ali Khamenei, with banners across Tehran urging the public to rise up in support of the Islamic Republic after the devastating war that killed the 86-year-old cleric.

The country's theocracy plans to see millions flood the streets of the capital beginning Saturday in scenes reminiscent to the burial of the late Supreme Leader Ayatollah Ruhollah Khomeini in 1989.