Lord Zack's Space Opera
The Tholian Holdfast is the name of the territory claimed by the Tholian Assembly. The xenophobic Tholians fiercely defend this territory from any incursions, which has historically been a problem because some of their worlds were once claimed by the Klingons. A new revanchist movement emerged amongst the Klingons shortly before the Dominion War, possibly due to Changeling involvement. This nearly resulted in war, but the Dominion invasion of the Alpha Quadrant proved a more pressing concern.