The Roman and Ottoman Empires seemed to be more of a death by thousand cuts than what Germany & Japan experienced in WWII. None-the-less I do not believe that militias such as Hezbollah or insurgencies such as the Iraqi/Afghani can directly take down a great power according to your definition of "...your nation state no longer exists..."
The Ottoman Centuries (ISBN 0-688-08093-6) Still chipping away at this one...
Rubicon (ISBN 1-4000-7897-0)
Bookmarks