Board Thread:The Reference Desk/@comment-7657843-20170219210325/@comment-188432-20170530184253

Well, yah. The Dominators, represented by Rago and Toba, are killed by their own weapons, which amounted to a central "seed device", encircled by a series of rockets emplaced in what Two called "perimeter holes". The combination of the explosive power of these two sets of weapons were to have destroyed, or at least made uninhabitable, Dulkis. But the Doctor instead localised the effect to a single island, and thereby exploded the Dominators' ship.