What it says on the tin. This is a thing that happens and, when you do not control the moment of peace, it can get rather annoying. Any way to trigger a "retreat"-like effect or something? It's really rather annoying (and expensive) to have your entire fleet in orbit of the enemy home planet looking mean but unable to move out of the system. I had a bunch of Wormholes set-up, but they are insta-deleted, while the fleets are not insta-moved.