If the crown prince of Saudi Arabia has in mind a war with Iran, President Trump should disabuse his royal highness of any notion that America would be doing his fighting for him. Mohammed bin Salman, or MBS, the 32-year-old son of the aging and ailing King Salman, is making too many enemies for his own good, or for ours. Pledging to Westernize Saudi Arabia, he has antagonized the clerical establi