The world is a big place and there are as many regulatory agencies as there are countries with the means to establish them...
http://en.wikipedia.org/wiki/List_of_civil_aviation_authorities
Drilling down into the specifics of each country and how they might view Hobby Drones will take some time.
-=Doug
Replies
Agreed. The global approach to this discussion will never focus.
Let's stick to the US discussion.
-=Doug
There was some effort in 2010 on RC Groups to establish a list of international model aircraft regulations..
http://www.rcgroups.com/forums/showthread.php?t=1352495
To save some effort regarding Germany (mind the date) HERE is a response from that thread.
Quoting from the post:
Wow. We don't require liability insurance in the USA for individual flying...yet. Oh wait, the AMA has this if your are flying according to their safety code. Go figure.
-=Doug