India has a new prime minister; and each of Asia’s four most powerful nations is now led by a combative nationalist. The multilateralist assumptions of the postwar order are giving way to a return to great power competition. Nationalism is on the march, and nowhere more so than in the rising east.

On the face of it, Narendra Modi’s victory in India’s election had little connection with geopolitics. Mr Modi’s pitch was to a nation tired of the incompetence and corruption of the Congress party. His promise was faster economic growth and rising living standards. His ambitions, though, reach beyond the domestic: India should be China’s match on the global stage.

Mr Modi’s Hindu nationalism fits the temper of the region. China’s President Xi Jinping wants to restore the Middle Kingdom to past pre-eminence. Deng Xiaoping’s caution has been replaced by demands for due deference to Chinese power.