NBC News' Richard Engel is in Tehran where huge crowds are gathering for the funeral of the late Supreme Leader Ayatollah Ali Khamenei. Our team was at the mosque where mourners were chanting "death to America." The ayatollah was killed in American and Israeli airstrikes at the start of the war earlier this year.
Hundreds of thousands of mourners began a days-long funeral on Saturday for Ayatollah Ali Khamenei, Iran's late supreme leader, beating their chests in sorrow before the glass case containing his flag-draped coffin in Tehran and calling for revenge against Israel and the United States.
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