While there is no need to include tags in the question title (see Should questions include "tags" in their titles? on the main Meta site), I couldn't find any discussion on including tags in the question body. So I'm asking here now:
Should a question body itself contain all relevant information or can it rely on tags for clarity?
An example would be a question, which requires a country or jurisdiction. In this case, is it enough to include the relevant tag (e.g. faa-regulations), or should the question body explicitly mention the country?