Anyone know a fast way to win my war?
It goes like this, my opponent is too strong, but they could not possibly mount a attack on my colonies without taking heavy losses, and sending their entire fleet.
On the other hand, I cannot attack without the same tactics.
I am researching faster than them (I think) but they are expanding everywhere.
And, believe it or not, the reason I haven't accepted their peace treaty is because I don't want to give up a resort, that's right, a resort. 
I'm blue, they're red, centered is my capitol system, yellow/green is a different empire than me but the same race.
jump onto their homeworld, kill their large star base, jump out and play defense, then when they almost finish the star base on their homeworld again jump in and kill it again... rinse repeat...
eventually they will be out of money? It seemed to work for me.