New Delhi, July 6 -- Iran's top officials and brothers of the new supreme leader emerged into public view Sunday to attend funeral prayers for Ayatollah Ali Khamenei. Their appearance projected unity, defiance and confidence in their safety as Iran pushes back on U.S. demands in negotiations to permanently end the war.

Crowds of hundreds of thousands chanted "Death to America" and "Death to Israel," as they called for revenge over the Feb. 28 attack that killed the 86-year-old supreme leader and other top officials, triggering the war. Some hard-liners called for the assassination of U.S. President Donald Trump.

Iran's new supreme leader, Ayatollah Mojtaba Khamenei, has yet to make an appearance in the funeral ceremonies, which are unfo...