Iran is holding extensive funeral ceremonies for Ayatollah Ali Khamenei, the assassinated supreme leader, following his killing in a US-Israeli strike.The events, spanning six days, are expected to draw 15-20 million participants in Tehran alone, with thousands gathering to pay tribute.Security measures are heightened, including road closures and airspace restrictions, to manage the massive crowds.Khamenei's son, Mojtaba, is expected to play a key role but has not publicly appeared.The funeral route includes cities significant to Shia Muslims, with the final burial in Mashhad.International figures like Pakistan's Prime Minister Shehbaz Sharif and Russia's Dmitry Medvedev attended.

The event underscores Iran's resilience amid ongoing tensions with the US and Israel, with officials warning of potential resumption of hostilities if needed.Mourning rituals include chants of 'death to America' and calls for vengeance, reflecting the nation's grief and determination.