Iran is preparing for a lavish six-day funeral to honor deceased former Supreme Leader Ayatollah Ali Khamenei, with militant and authoritarian allies descending on the capital of Tehran for a spectacle designed to project the regime’s strength despite war, economic turmoil, and uncertainty over its future.

The ceremonies begin Saturday, more than four months after Khamenei was killed in the opening wave of U.S. and Israeli airstrikes on Feb. 28.