I found that many people wanted the declare war option. Well, you always had it:

In a recent game I was upto 2228 july 7. I was mostly the galactic trader and had good relations with everybody except the drengin who were the top military power and their yor allies. Mostly because I was pretty much used to exstracting tribute from evil races(i am good via xeno ethics). I knew they were going to declare war on me so why not beat them to it. I sold it to the altarians(opposite ehtical alignment to drengin, no trade and recorded war)who gave me singularity drivers III(corect me if I'm wrong but thats a pretty decent tech) for it. Basically I was at stinger IV and focusing on more peaceful techs and was on omniscience. For the record:

challenging-small galaxy-5 opponents-i am Terran alliance.