As a member of ODN's government, especially as its secretary of state, your words are, in fact, representative of ODN as a whole. And as its leader for a long while, your words certainly carry much weight within and outwith the alliance. Do not pretend as though you are but some sweet, baby-faced new member whose words are irrelevant to the wider world. You may be 'one person' but you are one of very few about whose words anyone actually cares.
As for the rest, I have no problem with you declaring war on Sparta here. Good on ODN for declaring in support of its allies.