1. Tom: Please re-read my posts; I specifically said I wasn't excusing or rationalizing China's occupation of Tibet. I was just saying that there are historical and demographic forces which have led to the it happening. I'm not, as you said, "pro-Chinese," but fair is fair, and I am trying to be fair. The situation is not simply "China is evil" or "communism" is evil." It's more complicated than that, and that's all I was trying to point out. Oversimplifying the problem won't lead to a real solution for the Tibetans.
2. Dave: You did say "suck" and "communism" together somewhere above, so I wasn't trying to attribute something to you that you didn't say. What I've tried to do is to understand the causes of the situation in Tibet, because understanding the causes is the best way to a solution. Yet because I've tried to do this, you've basically ignored the content of my postings and labeled me "pro-China, anti-Tibet." And this, despite the fact I said I study Tibetan Buddhism!
I have not been condescending to you; if you felt that way, I'm sorry, but it seems more like you're just being polemical. For instance you said, "No one here is slamming the Chinese people" and then go on to say "These people are killers. Let's not forget that." Like I said, fair is fair, and frankly this alone shows that I have been more fair than you.
3. James: The Tibetan King Srongtan Gampo, founder of the eponymous dynasty in the late 6th-early 7thc., cemented political alliances with both China and Nepal by receiving princesses in marriage from each. So they were aware of each other from at least that time. Not much later (mid 7thc) the famous Chinese Buddhist pilgrim Xuanzang made his rounds of the Buddhist holy sites. Then not long after that, Tang emperors were collecting tribute from Nepal (see Ranitsch, "The Army of Tang China"). So the Chinese and Nepalese have been acquainted from at least the early Tang period.