Alright, so the story of the United Republic of Earth thus far, purely in terms of foreign policy. There's some interesting stuff going on domestically but I'm going to skip it and get right to the good stuff. For those who haven't been following, we're an indirect democracy that believes in fanatic individualism and materialism. My philosophy is to let ethics drift happen and use other means to keep my people happy.
Our first alien encounter was with a race of industrial reptiles of the planet Kloo. Coincidentally, they completely match the prevailing ethos of Earth, capturing the imagination of humanity. Our first encounter with spacefaring aliens was not as friendly. It was with a race of anthropoids humorously called the Them. They're insects but they look like lobsters. More importantly, the Themlar foundation is a theocracy, which immediately puts them at odds with us. To make things worse, the our next encounter is with the Boki, a military dictatorship of birds. Obviously such a government consists of oppressors opposed to democracy.
The third spacefaring nation humanity encounters is also avians, but in a stroke of luck they're a moral democracy and they love us from the moment we meet. Together with them, the Shantari Republic, we form the DAS, Democratic Allied States.
The Them, in the mean time, colonize a planet in the same system as Kloo and set up an observatory to aggressively study them. This is unacceptable, we cannot allow our brothers and sisters on Kloo to face religious oppression. I begin building a fleet of missile based interceptors to take that system for myself, as well as a force of marines. As I'm considering my options, they form an alliance with the Boki: the Harmonious Axis. In addition to being a seriously appropriate name, it means that we're on too even terms to win an offensive war.
Enter the Helvan Coalition, another nation of birds. They're plutocratic oligarchs, basically a nominal democracy run entirely by the 1%, and their main priority is exploring the galaxy. They aren't much interested in trade so I drop an embassy down and forget about them, instead focusing on building up my power domestically in various ways. However, two relatively uneventful decades later I get an interesting offer: The Helvan want to join the DAS. Now clearly they aren't a democracy in any real sense, but this aligns with our political interest and they're democratic enough that we can sell it to our people. So now they're in, and we again have the advantage over the Axis. I begin expanding my navy with new Liberator Destroyers that bring to bear larger missiles as well as point defense systems.
Before I can declare war myself, my bird friends come with an interesting offer that doesn't really live up to their pacifistic ideals: they want to attack the Harmonious Axis, with the goal of "liberating" planets to form a new democratic nation. Its not strictly optimal but I decide that, yes, this is totally something that space NATO would do so I agree. The war was annoyingly micromanagy but the on the backs of the allied navy and Earth's space marines we did it. We spread democracy.
The new state consists of Boki birds and Them lobsters living together in... well, harmony is the theory, and when has anything like this ever gone wrong before? Their old governments have been replaced by an indirect democracy where everyone uses the internet to vote on everything. If they develop a strong military I might let them into the DAS, otherwise I'm vetoing them because I want to conquer some of the Boki and Them worlds and I don't want another vote in the DAS that I have to appease.
Oh and we've discovered a nation out there that has overwhelming military compared to us in every category and is NOT a fallen empire. Hopefully we can fly under their radar in the short term.