BEIJING/MOSCOW, Aug. 25 -- In a display of strategic reach that few nations can match, India conducted high-level diplomacy on two fronts simultaneously Monday: National Security Advisor Ajit Doval sat across from China's top diplomat in Beijing to address one of Asia's most consequential territorial disputes, while Foreign Minister S. Jaishankar walked the corridors of the Kremlin in Moscow, laying the groundwork for a bilateral trade relationship targeting $100 billion by the end of the decade.

The convergence was deliberate. With the BRICS summit scheduled for September in New Delhi and Russian President Vladimir Putin confirmed as a guest, India's diplomatic calendar is accelerating. Prime Minister Narendra Modi's government appears ...