Remember the Minbari? After the death of Dukat, the leader of the Grey Council, they spent 4 years killing their way through billions of Humans across dozens of colonies on their way to Earth.
What about 8472 chasing the Borg to another Universe to finish them off?
I saw former Prime Minster Blaire reasonably explain why they stopped at the Iraqi border at the end of the first Gulf war on CNN sometime back... "our Arab allies were not interested in attacking Iraq, and they certainly didn't want us staying in the area beyond the current conflict, so hypothetically after Kuwait was freed and we had Saddam in a small cell, how long would it have taken to conquer, pacify, rebuild and civilize Iraq? That was well beyond our original mandate and might be well into the next century before those goals might be half accomplished."
Chasing an entire species to make sure that they are entirely exterminated takes a particular sort of determination that is not an idle half measure taken during some fit of whimsy... Unless they're assholes?
I thought the Volm were assholes because they launched a war that they knew their grandchildren would still be fighting, and maybe not even their great, great, great grandchildren would see their mission accomplished to such a degree that they would be allowed to return to their homeworld.
Cochise, who was born in space, however last week is saying that they had to hide their breeding colony which was under threat and their species was threatened with a final extinction... Um? What about the rest of the population left on the homeworld so far away? Either Cochise was only talking about the existence of the space born Volm or there are no more Volm left on Volmworld because the Espheni already murdered those Volm to the last.
If Volmworld is a dead husk, then their war is righteous even if it takes another 10 generations of Volm to remove the Espheni from the universe and they expire simultaneously in the final act too.
Righteous and justified, even understandable, but stupid.