I'll take the fear, please.
As for Olethros, take what we need to replenish our forces in UED space after our losses.
Then move on to Vernost III to suck up more resources.
Also, I propose we talk with the UED again. Tell them that we have developed a new bio-form weapon to be used against Dyles. The problem is that it will destroy a planet's usability, since it uses up all of the planet's minerals as part of its operation. Ask them if they expect any of these planets back, or if we can only target this new weapon on certain worlds.
Make them think we have a new super-weapon, when we don't, and when we say we deploy it, we can suck all the minerals from the planet.
What's the UED going to complain about? It's killing Dyles, isn't it?