You were attacked by one nation, a regular member, so you then countered an entire alliance. This is just plain crazy; SW wasn't looking for a war with you, and if you have a normal intelligence level you can see that.
Non Grata and Polar hit for geopolitical reasons that have absolutely nothing to do with your tiny alliance and have an awful lot to do with things that are actually important. Now I know you don't have access to the information needed to understand this, because nobody relevant trusts you, but even a basic understanding of how politics work should be enough to let you know that Non Grata and Polar, two rather large alliances, don't launch wars to protect 4-man alliances they have no connection to or reason to help. So that fact should let you know that they have some reason to help you, one that is not based on their connection to you, because they don't have one.