Host the server on Tor. Have a second secret server on Tor that passively monitors the health of the first and distributes the key if it is taken down. Have a one-time pad of passwords memorised, not written down or taken from a book.
Lots of "information" obtained from people under "interrogation". Not that I'd ever dream of calling the IDF scumbags who are happy to torture people until they will confess to anything.
Host the server on Tor. Have a second secret server on Tor that passively monitors the health of the first and distributes the key if it is taken down. Have a one-time pad of passwords memorised, not written down or taken from a book.