the creature alliance - semi advanced discussion

Before the main kingdoms formed an alliance, there was war and chaos between each of the kingdoms. Each animal was out of themselves and disorder ravaged each of the monarchies.
But on one fateful night, nearly a century ago, the Rabbit Queen and Hare King invited several kingdoms to a feast. The ones that showed up to the dinner were the Bird kingdom, the Canine kingdom, the Snake kingdom, and the Feline kingdom. The Rabbit Queen and Hare King proposed an alliance, something that had never been thought of before. Each of the kingdoms were in shock, but still intrigued. After hearing the two rulers explain the benefits, one by one each of them agreed and signed the contract. First the Bird Kingdom, then the Canine kingdom, the Snake kingdom, and lastly, the Feline kingdom.
For decades afterwards, trade was prosperous and many other smaller kingdoms joined in on the alliance. Mixes began to appear of different animals and harmony sung throughout each of the kingdoms. However, rumors are beginning to spread of a betrayal to the alliance between the kingdoms. The Feline kingdom has been beginning to act more authoritarian and creating more barriers with trade and immigration and spies have given information to the Rabbit kingdom that something is amiss. Desperately, Queen Petunia is attempting to prevent the war from happening. But at this point the question is who will win.