Agree with comments on Thomas Wictor twat account.

Art of the Deal was the book for the book cipher.

President Trump's tweets were/are the messages.

Key shared between Trump/Rodman/Kim

Same book can be used for other comms too with different key for different parties.

Learn our comms.

So many minutes past the hour and with so many minutes between will indicate which message or which key is in use.

Q posts should be able to be decrypted as we learn the key in the future.

Future proves past.

News unlocks map.