The body of Iran’s Supreme Leader Ayatollah Ali Khamenei is being laid to rest today at a shrine in the city of Mashhad. It’s the culmination of a multiday funeral procession that has drawn millions of mourners, including foreign dignitaries and at least eight heads of state. On Wednesday, massive crowds joined funeral processions in Iraq’s holy cities of Najaf and Karbala for Khamenei, who was killed in a U.S.-Israeli airstrike on February 28 along with his daughter, son-in-law, daughter-in-law and 14-month-old granddaughter.