In this Feb. 3, 2012 photo released by an official website of the Iranian supreme leader's office, Iranian supreme leader Ayatollah Ali Khamenei delivers his sermons of Friday prayers at the Tehran University campus in Tehran, Iran. Iran's supreme leader will deliver a Friday sermon on Jan. 17, 2020 in Tehran for the first time since 2012, as the Islamic Republic grapples with the fallout from the targeted killing of its top general in a U.S. airstrike and popular anger at its accidental shootdown of a passenger plane. (Office of the Supreme Leader via AP)