China recently authorized the construction of the largest dam in the world, which is expected to cost about $137 billion, on the Brahmaputra River in Tibet, close to the Indian border. Concerns about the dam's possible effects on water flow and regional stability have been raised by other nations,

China has approved the construction of what it says will be the world's largest hydropower dam. BBC News says the announcement has stoked concerns about displacement of communities in Tibet, as well as the potential environmental impacts downstream in India and Bangladesh.

Beijing's approval of a controversial mega dam in the lower reaches of the Yarlung Tsangpo River, which flows from Tibet autonomous region into India, has sparked concerns about the environmental impact of the project,