In his newly built palace near Tokyo, lined by stone statues of Roman emperors and surrounded by an 18-hole golf course, Masayoshi Son was stewing. After declaring for years the imminent arrival of the artificial-intelligence revolution,

Microsoft-backed OpenAI's chief Sam Altman is planning to visit India next week, three sources with direct knowledge of the matter said, in what could be his first visit in two years at a time when the company faces legal challenges in the country.