Iran launched an elaborate six-day funeral for former Supreme Leader Ayatollah Ali Khamenei on Saturday, staging a carefully choreographed display of national unity and defiance just four months after U.S. and Israeli airstrikes killed the longtime leader.

The ceremonies began after Khamenei’s body lay at Tehran’s Grand Mosalla Mosque on Friday. State media showed five caskets draped in Iranian flags, including a small coffin containing the body of Khamenei’s 1-year-old granddaughter, whom Iranian officials said was killed alongside him in the Feb. 28 strike.