Xi Jinping’s decision to stay away from the Group of 20 summit may have been intended to deny India its moment. Instead, Prime Minister Narendra Modi — along with the US and Europe — figured out how to more effectively counter China on the world stage. Fellow G-20 nations hailed India’s success in reaching agreement on a joint communique that remained in doubt just days before world leaders gathered in New Delhi for their most significant annual diplomatic event. Apart from finding consensus on Russia’s war in Ukraine, the...