Khamenei's three sons were seen in funeral. However, Mojtaba Khamenei, his successor and the man currently leading Iran, was absent from the ceremony.
Leaders gather for the NATO summit in Ankara amid disagreements over Iran, defence spending and the alliance's future.
Retired Gen. Jack Keane on Sunday said the U.S. has “got to stop” Iran from maintaining control of the Strait of Hormuz.
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