In OTL, Zahir Shah was undergoing eye surgery in Italy when he was dethroned in a coup by a former Prime Minister in 1973. What if this coup never took place or failed, and Afghanistan remained a monarchy after 1973? Would Zahir Shah still have been dethroned at some point? Would the Soviets have invaded? If not, Zahir Shah's continued reign butterflies away the Soviet intervention in Afghanistan, and the subsequent unrest and a few other important things that might have to do with that country.