On June 21, 1941, Soviet archaeologists opened the tomb and removed the skull of a Great Mongol Khan named Timur, despite warnings by the locals that disrupting the tomb would lead to a great war. On the tomb tself inscribed in arabic text were the words, "When I arise from the grave, the world will tremble" The very next day, June 22, 1941, Operation Barbarossa, the longest and most brutal invasion carried out during WWII, was implemented. Hundreds of thousands died within the first weeks.