Xi Jinping's options to defuse the crisis come with high political and economic costs.
One dam project is to come under greater scrutiny while another may be locked in a court battle.
Foreign reporters and observers are prevented from independently verifying state media accounts.
It's in neither country's interest to go to war, experts say.
Beijing downplays report that China is set to overtake the US in terms of purchasing power.
The Ukraine crisis overshadows U.S. President Barack Obama's upcoming Asia trip.
The challenge of meeting energy demand in the region may well come at the expense of water resources.
It may be concerned over similar aspirations by Tibetans and Uyghurs to vote themselves out of the current arrangement with Beijing.
Despite China's bluster on Tibet, there is hope for a resumption of talks between the Dalai Lama's envoys and Beijing, some experts say.