Three years ago I visited the Himalayan Buddhist kingdom of Bhutan. It's a spectacularly beautiful place, with thick oak, pine and bamboo forests blanketing a soaring topography, the green mountainsides capped by scores of jagged, snowy peaks.

These mountains, along with strict tradition-bound government policies, have allowed Bhutan's religiously rooted culture to remain, to this day, relatively free of outside cultural influences.

Bhutan is wedged between China to the north and India to the south. Land access from India is easy, via subtropical lowland roads, and diplomatic and trade relations between the two nations are strong.

China's a very different story. Himalayan peaks more than 20,000-feet-high make land travel between the two nations virtually impossible. For the Bhutanese, that's been a blessing.

That's because, historically and to this day, the Himalayas have impeded expansionist China's desire to push southward. Energy and resource-hungry modern China would love to harvest Bhutan's forests and abundant hydroelectricity power, the latter now largely exported to India. (Bhutan has no formal diplomatic relations with China, or, for that matter, the United States.)

Were China to succeed it would undoubtedly mean the collapse of Bhutan's carefully preserved Vajrayana (Tibetan-style) Buddhist culture. Bhutan, in effect, would go the way of the nation of Tibet and the region known as Xinjiang.

Xinjiang? More in a minute.