Bhutan, high in the Himalayas, has come to represent isolation. It is not only a country of rocky mountains where monks retreat to meditate it is also a small,landlocked kingdom of fewer than 800,000 people squeezed between the world’s two most populous nations. Over the centuries, Bhutan disengaged from the rest of the world, banning television and the Internet until 1999 and calling its economic policy the pursuit of gross national happiness. The number of visitors is rising. About 100,000 tourists are expected this year, compared to only 10,000 two decades ago. As the plane drifts between the mountains bound for the landing strip of Paro Airport, I wonder what sort of greeting the Land of the Thunder Dragon will provide. The scenery was spectacular. The air was thinner and fresher. The languid fluttering of the prayer flags by a river suggested that time was moving more slowly