Hasn't all letters already sent IG happened IG? Whats the difference of a letter sent 2 days ago by a ruler and a letter sent 1,5 day ago by anyone?
Not here to make a scene, just understand the difference since it caused quite some drama the last time we went through this 
The difference between the messages is the ruler's authority in external affairs.
Everything that the ruler sends to the ruler channel, unless specified, is expected and intended to be known by the other rulers, and thus their realms.
So, the newspaper editor can expect that the sending ruler's message has been forwarded by the receiving ruler, to his council or even the entire realm.
If the receiving ruler hasn't, well then it's not the problem of the newspaper editor, it's not a sensitive information, as the sending ruler wanted that everyone knows.
