South Tibet is China's sovereignty territory, and what China does within it's own borders have NOTHING to do with any foreign countries.If China were to divert water resources from South Tibet to arid regions of China, it would inevitably lead to water shortages in the downstream areas. The only consequence of such an action would be a humanitarian disaster, and China would absolutely not do such a thing. I believe you would also not want such a thing to happen.
The root cause of the Russia-Ukraine war was that Russia's survival environment was threatened. NATO's insistence on expansion despite Russia's security concerns was the root cause of this war. This war was triggered by NATO's pursuit of absolute security.
I do not condone Russia launching a war, but we need to understand Russia's concerns about its survival.
And about Russia:
1. they are an invader of foreign nation that they recognised themselves without duress or unequal treaty
2. I can in fact completely understand why Russia invades Ukraine and the evilness of NATO. NATO's expansionism is what escalated this whole thing, and that is a fact.
3. But this whole blunder, majority of it is still Russia's to blame from the beginning, they are the ones who recognised the borders of Ukraine willingly and they recognised crimea as part of Ukraine willingly themselves without any duress. And DO NOT tell me dissolution of the USSR was somehow a "duress" because they are not even close to being vulnerable and still hold the world largest nuclear stockpile, and there was no "Eight-Nation Alliance" doing marching drills in their capital city or in their version of the Forbidden City like what happened to China during the Century of Humiliation. These are not even close, Russia just completely failed or does not care for political maneuvering which is their own fault resulting in the consequences in 2014 and subsequently 2022. Plain and simple.
And also about basic principles of sovereignty. If such principles were compromised, then China will actually need to fight for its very survival.it's about fate and survival of china.