And in the case that you recognize the invasion of Belgium as 'warmongering', would it then not be Prussia's responsibility to intervene and mediate the conflict? I suspect that your problem is with the nature of their mediation, in which case you should be upset that the Treaty of Constantinople, which you signed, did not specify what precisely the neutral mediators responsibilities were.

In either case, I have the utmost confidence that the ToC signatories will accept Prussia's decision on how to arbitrate the newest conflict in Northern Europe.