I put 3D in quotation marks as to not sound like a dick towards characters that might be insinuated to have more 2D political viewpoints.
Basically, I'm struggling to find a term to describe Seriphyn's political beliefs (if a single term would even be possible). He is not a Hawk in the sense that he generally sees war and violence as tragic and a breakdown of communication (which I feel would fit a Gallente quite well), as opposed to believing it an opportunity to spread the Federation far and wide. He may actually have more of a leaning towards Dove, as he is not averse to cultural warfare, and does not believe taking a life to be acceptable in any instance (with exception, such as Sansha, which he would gladly fight and justified as 'mercy-killing'. He would also not blink an eye in killing someone who has voluntarily signed up to Nation, either, viewing them as sick megalomaniacs).
As I am IRL, he is very critical of one-sided statements, or statements that do not show the whole picture. He is not completely cynical, however. Seriphyn would look you in the eye and say that the Federation is the best hope for a unified human government in the known universe, citing the progress/achievements that the Fed has made so far. He also cites the alternatives, mainly the Amarr Empire, while noting that the Minmatar and Caldari states are insular, lacking a world view and obsessed with historical matters. He recognizes that democracy is not organic of all cultures, but also cites that the Federation has enough constitutional leeway to allow cultures to take a natural form of democracy according to their social constructs (eg. Jin-Mei democracy...they only elect members of the upper castes perhaps?).
He is a "realist" and is very much aware of the Federation's flaws and faults, but also seeks to provide a reasoning as to why this is the case, why this exists, whether it is even a fault to begin with, and perhaps trying to justify it to other cultures that, what they see as a fault, is merely a facet of the Federation. For example, he is not in denial/a revisionist about what the early Fed did to Caldari Prime, and he does agree this was wrong, but unexpected when you take the term "extremist" or "exceptionalist" into account. I suppose the idea is that, as a soldier of democracy (and where an educated populace is key to a democracy), he seeks to take an objective approach, while still being partial to the Federation.
How do you describe this? It's not like Patriot/Practical/Liberal, where the Caldari State practices indoctrination over education, so it's far easier to have a two-dimensional view...but in the Federation, which would stimulate abstract and critical thinking...it's not as simple as "hawks versus doves".
Feel free to take a general approach to the topic as well.