We did not had ANY problems with similar incidents before. We had gone with murderous settings ALWAYS when there was Lyoness/Rielston/Eston militia/troops which didnt respond our requests to leave.
And like said, Lyoness had already taken side when they proposed treaty which would give advantage to the enemy. Everytime i tried to discuss about this treaty, i was replied with silent, or "You really need sign this!".
It was Lyoness decision to become NOT neutral on this war. And it was Darkan decision to act for it. I did try to talk with it, but Queen didnt reply much, but that silly Himoura and Lord of Melias sent threats.
Like you said, you had given permission to CE march on their lands, but denied it from us. That is how it was told to me... and Lyoness kept repeating how fair their treaty was.
In my opinion, we both had good reason to act like we did. You wanted us out from your lands, and we wanted to fight CE on your lands like we had done few years already. You valued your indepense over the relations with Darka. Now we will see how this end... The Winner will write the history 
You want to talk about threats?
"Revoke CE's passage rights or we destroy Hawthorne."
That is a threat.
"Your passage rights are revoked until further notice, seeing as you've just set to murderous and attacked a bunch of our men while at peace for no reason."
Is a reasonable response, and yes we're aware that you've come through our lands murdering everything in sight. This is why the whole treaty was created in the first place. It was not meant to be all nice and fuzzy for everyone, and the consequences of ignoring it should have been obvious. If you recall, I threatened KK once, and that was after Darka instantly declared war after we lowered relation to neutral in response to you attacking our troops in cold blood, and that was to merely repay Darka in spades for whatever damage they did.
Of course, its obvious why Darka has no more friends on Atamara, they blatantly ignore the basest forms of diplomacy, and pursue an active campaign of murder and disregard for anyone not bending over backwards for them. CE is allied with almost everyone? I wonder why that is? Oh, I'll explain it: they respect other realms, engage in pleasantries, and are generally much nicer to work with than Darka, because if you pursue something they don't necessarily agree with, their response isn't "switch to murderous and burn everything we can touch"
