Dealings between India and China are stunted in many ways. Rich cultural links once existed long ago, from the study of eclipses to Buddhist chanting, but hardly anyone remembers that today, laments Amartya Sen, a Nobel-prize-winning economist. After a love-in during the 1950s, China thumped India in a border war in 1962, and the two have continued to growl over their high-altitude frontier since. Indians envy China’s economic rise, but console themselves by pointing out that it is no democracy. Aside from stiff displays of fraternity at summits, most recently the G20 bash in Mexico on June 18th-19th, China seems not to think much about India at all. Investment flows are negligible. There are still no direct flights between Beijing or Shanghai and Mumbai, India's commercial hub.

