Mourners in Tehran call for revenge during Ayatollah Khamenei's funeral procession, as tensions escalate with the U.S. and Israel.

Huge crowds thronged Tehran for Ayatollah Ali Khamenei's funeral procession as mourners demanded revenge against the US and Israel. The ceremony has become a show of regime strength while war-end and nuclear talks with Washington remain stalled.

Iran began a state funeral procession in Tehran for Ayatollah Ali Khamenei on Monday. The ceremony has become a test of public support and a flashpoint for revenge rhetoric and stalled diplomacy.