that the Creterakians don't particularly care one way or the other about the other species, they just wanted to them to cut the shit with all the wars and killing and whatnot. The territorial nature of past galactic wars seems to be an inevitable aspect, exacerbated by the factor of species-bias. When you distill the reasons for conflict down to their purest motivators, we tend to find that most wars are fought over territory and / or resources anyway. Species-bias (and I'm basing this on research done on race-bias in armed conflit) plays a significant factor when it is used to motivate a population to accept the idea of armed conflict by envoking a "they're different from us, therefore a significant threat" attitude when, had species not been a factor in the consideration of using military force, the conflict could have been resolved through diplomatic means. I tend to think that this is a major factor in the Cretirakian takeover, that they wanted to basically force the other sentient species to grow up and act like adults (so to speak) when it comes to resolving conflicts, rather than just beating the hell out of each other like children fighting over a toy in the sandbox.
However, one also has to consider the cultural differences present in the multi-species mix, as well as alien psychologies that are quite differnt from humans. Consider the First Galactic War, in which the Sklorno attacked Withrit with seemingly no provocation or warning simply because they wanted to expand their territory to make room for an exponentially growing population. Okay, on the surface that makes sense. You need more land for your population, you just run the neighbors off and take over their parcel, getting both land and the resources with it. But the Sklorno saturation-bombed Withrit, making it unsuitable for population by anyone but the Quyth. That seems counterproductive to the goal of acquiring more land for a growing population, so there must have been some other behavioral motivator going on in the psyche of the Sklorno that is not understood from the human point-of-view. Either that or the Sklorno just really didn't like the Whitok and wanted to seriously jack their shit up. :)
Wow, I could totally write ten or fifteen more paragraphs on in-group / out-group bias, racial identity, and defense of culture, but that seems kinda silly seeing as that we're talking about a fictional future-history.
**Conjunction Junction, what's your function? No seriously, I slept through grammar class, so I have no idea what you do.**