A huge funeral procession for the assassinated supreme leader, Ayatollah Ali Khamenei, is underway in the Iranian capital with many vowing revenge against the U.S. and Israel.

Throughout the capital, the government is using Ayatollah Ali Khamenei’s funeral to project strength at a time of great uncertainty for Iran.

Authorities predict 20 million people will attend six days of ceremonies to mourn the supreme leader killed in the war with Israel and the U.S.

An ominous symbol has completely saturated the state funeral of late Supreme Leader Ali Khamenei. Hundreds of thousands of mourners packing the Imam Khomeini Grand Mosalla in Tehran were seen waving massive red flags bearing the adapted Shia slogan "Ya Latharat al-Khamenei"—or "O Avengers of Khamenei.

Millions of mourners gathered in Tehran, Iran, on July 5, for funeral prayers for former Iranian Supreme Leader Ali Khamenei. However, apart from some singing praises of the former Iranian leader, supporters called for the killing of President Donald Trump.

Iranian Parliament Speaker Mohammad Bagher Ghalibaf meets senior Hezbollah officials, affirming that backing armed proxies remains an unnegotiable "red line."