In his office in New Delhi, Ashwini Vaishnaw, the Indian minister of electronics and information technology, keeps a 12-inch disc of silicon semiconductor on the wall, gleaming like a platinum record beside a portrait of Prime Minister Narendra Modi. Its circuits, measured in nanometers and invisible to the human eye, may be the most sophisticated objects ever made. It vies with oil as one of most valuable traded goods on earth. According to India’s government, the microprocessor chips that power all things digital will soon be fully made in India…