Somewhere in the 1960s, eight centuries after the birth of Genghis Khan, his sulde, the Spirit Banner that he had carried across Eurasia, disappeared from where the Communist authorities had kept it. From the time of this purge, the sulde of Genghis Khan has not been seen or accounted for. Many scholars assume that the authorities destroyed it in a final act of malice toward his soul. Still others hope that just perhaps the sulde lies forgotten in some dusty basement or bricked-up room from which it will, one day, be brought out to lead and inspire the Mongols once again.