FILE - An Iranian woman holds a poster of the late President Ebrahim Raisi during a mourning ceremony for him at Vali-e-Asr square in downtown Tehran, Iran on May 20, 2024. While the cause of the May 19 crash remains unknown, the sudden death of the hard-line protégé of Iranian Supreme Leader Ayatollah Ali Khamenei exposed the contradictions and challenges facing the country's Shiite theocracy. (AP Photo/Vahid Salemi, File)