Quoted By:
While your efforts to convince the Swall to join you directly didn't quite work as you'd hope, they did make a counter offer to allow them to exist unincorporated. While this does mean a loss of a habitable planet and a large new genetic and population base in the form of the Swall themselves, you will be able to both <span class="mu-i"><span class="mu-s">complete your vow and disarm a nuclear power</span></span> within your own borders. It's a win win with no real cost or consequences for yourself or the Hegemony at large. This species will pacify itself.
...The only problem, of course, is in the extreme long term. Given the Swall's rate of intelligence and technological advancement, they could become a problem many years from now, long after your death, where they may be able to outclass the Hegemony's science. However, even this is a longshot, as they would have access only to a tiny region of space with limited resources, while the Hegemony continues to expand its borders and power. Depending on how the Swall develop, they could eventually form a much stronger government that could become a problem. Ideological opposition to the Hegemony means they'll always be against your beliefs, unless you defeat them utterly and remake their beliefs- or bring them to extinction and commit Xenocide.
For that end; your earlier plans of secret colonies would work well with this. You will surround the Swall and be their only neighbor and contact, their bridge to the wider galaxy and their only trade partner or supplier. As such, it is inevitable that there will be culturally cross contamination. And given the Swall's technological and societal path scarily mirrors your own, it is highly likely they will run into the same problems yours did- leading to the eventual extinction of the freedom, democratic, and capitalist state in exchange for the strength of supremacy. The only issue is that creating this situation will lead to an exact cold war situation- in a sense, acting as an outside alien threat may strengthen their resolve in their ideology, leading to an eternal stalemate.
Of course, there is no reason you can't simply <span class="mu-i">lie</span> and conquer the Swall when they least expect it. You have the ability to detect their nuclear weapons, and they know this. The moment the last one is turned off, you could easily conquer them and turn them into a fully subservient race underneath the Jaxtians. For this reason, there is no reason to not accept the deal, at least on the surface... But to the wider world, it could be considered a side of weakness to give any ground to such a small and insignificant alien race...
>Accept the Compromise
>Use espionage and begin supporting like minded resistance groups (After Accepting)
>Lie about accepting and invade them the moment their guard is down
>Reject the compromise and demand they surrender or be utterly destroyed <span class="mu-r">(Warning: Severe Consequences)</span>