I noticed following text on my nation's Government Type section earlier today: (Next Available Change 9/10/2009). As I had long wanted to declare war on someone, but wasn't able to do so due to the anarchy, I of course immediately changed my government to monarchy and declared war on one nation. After I had done this I deployed almost all of my soldiers, which resulted my nation to fall in anarchy again, and attacked him. Later today I received message from ingame moderator and got warned for "Used a game exploit to declare war while in Anarchy. - 9/10/2009". My offensive war was of course deleted.
I wonder why I got this warning and war deletion as I declared my war in monarchy, not in anarchy, and therefore there existed no game exploit.