HAMBURG, Germany, November 8, 1999 — Whoever wishes to hide funds from the grips of tax authorities will find willing assistants in the Principality of Liechtenstein. Bank managers assert that they are working within legal means, but the files of the Bundesnachrichtendienst [German intelligence] present a differing version of the story: Mafia organizations, drug cartels, and major Russian criminals are virtually invited to do business in the diminutive country.