Jawaharlal Nehru, India’s first prime minister, and Donald Trump, America’s president, do not share many similarities. Nehru was an erudite product of Harrow School and Trinity College, Cambridge; Donald Trump, for all his expensive education, is ultimately a rough-and-tumble graduate of New York real estate. A freedom fighter before becoming prime minister, Nehru spent nine years in British-run jails having campaigned against imperial rule; Mr Trump’s tangles with the law have involved hush money for a porn star. Nevertheless, Nehru’s Fabian socialism—a patrician distrust of commerce mixed with an intellectual love of scientific progress—means his views on trade are, many years later, mirrored by Mr Trump’s America-first instincts.