While thousands gathered to mourn the late Ayatollah Ali Khamenei, Iran's Supreme Leader Mojtaba Khamenei remained absent from the public eye. His absence, even as his brothers attended the funeral, has fuelled speculation about his whereabouts and security. Reports suggest Mojtaba may be in hiding after being wounded in the Israeli strike that killed his father and several top Iranian officials. Here's an explainer on the questions surrounding his disappearance from public view.