In the summer of 2020, China and India came near to war. The nuclear-armed adversaries both massed troops and equipment along their disputed border in eastern Ladakh. The two sides slugged it out with fists, stones and clubs, next to a fast-flowing Himalayan stream, resulting in dozens of deaths and injuries, many from hypothermia. The entire 4,000-kilometre Sino-Indian boundary is disputed. In 1962, the two countries fought a short and vicious...