It's interesting to hear about your political views.
government may not be really concerned about justice in making its foreign policies. I believe that the ordinary people of every nation must share similar moral values. But what is going on in the minds of political leaders may be quite a different matter. .
You mentioned Tibet, this is a sensitive issue. Here I will not talk about it in terms of right or wrong. But one thing may worth mentioning. Chinese culture believes in softness (I'm not sure if this is an appropriate word). Softness means many things: tolerance, forgiving, flexibility, peace, non-aggression, etc. I have been taught that Tibet has been under China's rule since the 10th century, when Tibet was defeated after its repeated invasion of Tang Dynasty. As far as I know, over a thousand years, Tibet's population and culture have been well preserved. Even the prestige of its ruling class has been respected. This very fact could be a gloss of China's characteristic of softness. By contrast, in just several hundreds of years, the Indian culture in the American continent has become almost extinct. So now we don't even have the chance to protest to the U.S. government that the Indians should be a nation. I'm sorry, these words may sound a bit harsh. I'm being frank and I assume that is just what you expect for a better understanding of what a Chinese might feel when looking at history. I should also say I could be wrong. I'm just expressing what my education has convinced me of. .
Warmest regards.