The Wahhabist Saudis are basically the Muslim equivalent of the Protestant movement in Europe in the Thirty Years War IMHO. With the good bits taken out. They destroy tombs of venerable people and break down holy places and replace them with either nothing or turn them into the equivalent of Disney World. Just look at what they did to Mecca. A people with no recollection of the past is a people with no future. They do not respect their elders and they do not respect their neighbors. In a society fueled by oil money and foreign workers, if it does collapse, it will become the next Libya or worse. Previous Saudi leaders at least stuck to their own affairs and only attempted to use money and clout to influence events abroad. But the current rulers are just bonkers. Yemen has been a basket case for decades but it should be left for the Yemenis to sort this out.