Thousands of Iranians gathered in Mashhad for the burial of Supreme Leader Ali Khamenei, who was killed in an Israeli airstrike during the Middle East war. Mourners waved red flags symbolising revenge and voiced anger towards Israel and the United States.

The Islamic republic's supreme leader was killed in the first days of conflict between the United States, Israel and Iran.

Iran on Friday laid to rest its former supreme leader Ali Khamenei over four months after his killing in an airstrike, as two days of US and Iranian attacks raised fears of a…