The oil giant released a valuation target ranging from $1.6 trillion to $1.7 trillion. The figures fall short of the $2 trillion target Saudi Crown Prince Mohammed bin Salman has been fixed on for more than two years. The difference in value illustrates the operational, geopolitical and governance risks that investors face betting on the offering, writes Ben Dummett. The IPO still has potential to be the world's biggest by surpassing the $25 billion Alibaba raised in 2014. But the stock listing is beginning to reveal a set of dueling interests for Saudi Arabia. Saudi leadership wants the stock offering...