Why didn't the Federation destroy the wormhole the moment they learned of the Dominion?
The moment they learned of the Dominion? They didn't really know what the Dominion was, who exactly ran it, what prospects there were for peace, trade, exploration, etc. The Federation also wanted Bajor to join the Fed family, and destroying the celestial temple would have excluded that possibility. They did try to collapse the entrance without destroying the wormhole aliens, but the attempt was sabotaged by a changeling, and it made the entrance almost impossible to collapse instead. Hence the mines later on.
We use essential cookies to make this site work, and optional cookies to enhance your experience.