Iran's elite Revolutionary Guards and First Vice President Mohammad Mokhber vowed revenge on Thursday for explosions that killed nearly 100 people at a ceremony to commemorate top commander Qassem Soleimani, who was killed by a U.S. drone in 2020 in Iraq. "A very strong retaliation will be handed to them on the hands of the soldiers of Soleimani," Mokhber told reporters at a hospital were some of the wounded were receiving treatment for the bloodiest attack since the 1979 Islamic Revolution.