One of the pitfalls of diplomacy, so the traditionalists assert, is when the representative of the foreign nation goes native. It is one thing to understand the country in which you are stationed; it is quite another to appreciate it too much. But what happens when, by all the available indices, that country really is a model to be emulated? That is the problem that Ross Allen has grappled with during his five-year tenure as Britain’s ambassador to Estonia. As his posting comes to an end, he