Members of Iran's Islamic Revolutionary Guard Corps (IRGC) take part in a demonstration against American "crimes" in Tehran on January 3, 2020 following the killing of Iranian Revolutionary Guards Major General Qasem Soleimani in a US strike on his convoy at Baghdad international airport. - Iran warned of "severe revenge" and said arch-enemy the United States bore responsiblity for the consequences after killing one of its top commanders, Qasem Soleimani, in a strike outside Baghdad airport. (Photo by ATTA KENARE / AFP)