India has voiced concern about Beijing’s plan to build a dam in Tibet that is three times larger than China’s Three Gorges, currently the world’s largest hydropower facility.

Just as border tensions seemed to be easing, the Yarlung Tsangpo River project raises new questions between the two countries.

China has tried to reassure India over its plans for a mega dam in the Tibetan Plateau, which has prompted fears it will cause water shortages and damage the environment, by saying it will not try to benefit at the "expense of its neighbours".