In my first game playing on a Gigantic map, on Normal difficulty, with 9 other races, I've run into what you might call some considerable difficulty. Please bear with me; I know this is boring but I feel that the best way to get help is to give enough information. Thank you in advance for your advice.
A quick overview of this piece of the galaxy: Everyone has already been conquered except for me, the High Amoria, the Terrans, the Torians, the Drath, the Altarians, the Iconians, and the Arceans.
I had all but conquered the Drengin when they handed over their worlds to the Iconians. This was irritating because now my borders were pressing right against the Iconians', and there were some temptingly high-quality planets to be had, but the Iconians liked me, so things were looking OK.
The nasty part comes after over a year of me building up my new planets and researching the ultimate war machine (since all nearby planets are inhabited and I'm not about to declare war for no reason.)
My research is chugging along just fine-- and that's when the Drath declare war on me. Eager to flex my military/industrial muscles, I divert my research towards Majesty and get cracking at cranking out the Shortsword, which is shielded and armed with missiles. The Shortsword is doing just fine-- and that's when, one following the other, the Altarians, Torians, and Iconians all declare war on me. You see, for some odd reason, everyone was Friendly with everyone else, including, for the most part, me.
Now faced with the prospect of fighting four races when the other two are totally unwilling to send fleets, I finally develop my war machine, the Cesta. It's the first Huge ship in the galaxy and it can wipe out a fleet without taking a single point of damage since for some odd reason the AI insists upon using lasers.
Fast forward a few years. The Altarians, Iconians, and Torians have all repeatedly signed peace treaties with me, then promptly broken them for the exact same reasons they declared war on me in the first place. In one case I actually gave the Torians some technology to raise their relationship with me to Warm, which, of course, had no effect at all. The Cestas remained powerful death machines for several more years, but I've diverted literally all of my national budget towards producing them and they seem to have met their match. Huge-sized Drath craft are showing up in pairs and trios or even more, which is more than enough to take out a Cesta, or if they're lucky, even two. What's worse is that although they're still not a real threat, Torian beam weapons have advanced to a point where they can take a pretty decent chunk out of a Cesta, further harming my ability to effectively hold off the Drath-- every time I leave a world unattended, it's almost immediately invaded.
There seems to be no way out for me-- unless I can completely crush one or more of these civilizations, which is looking more unlikely every turn, I'll just be flying forth with Cesta after Cesta, until my economic engine is ruined and I'm helpless in the face of those damned Drath Dreadnoughts. I may actually go for a science victory at this point, as I already have Discovery Spheres and an Omega Research Facility.,
So, my questions:
How do I avoid a situation like this one where I'm locked into an uphill battle? Or, What did I do wrong?
Why was I unable to request that the Arceans or Terrans declare war on the other civilizations? (Their relationship, again, was Friendly.)
What would you do in my position?