China builds world's largest dam; India plans response

China has initiated construction of the world's largest dam on the Siang River (Brahmaputra upstream), a massive hydropower project that has raised strategic concerns in India. In response, India is accelerating its own counter-project in Arunachal Pradesh to mitigate potential water and security risks. New Delhi is closely monitoring Beijing's activities on the contested transboundary river while pushing forward its own infrastructure plans. The development highlights escalating hydro-infrastructure competition between the two nuclear-armed neighbors.