Yes, Merc them now.
No, Shwack them soon
After watching the video you posted, I have to admit that I was wrong about thinking only "tribes" vied for supremacy! We have had a long history of warlike behavior, haven't we, for whatever justification was given at the time. Seeing the civilizations fall, that were once great, you'd think we were slow learners if you were an alien race watching us from elsewhere in the galaxy! Sadly, they'd be correct in their evaluation of us! Thanks for a great post! *hug*