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.