This was resolved a while ago and he asw talking to me, we resolved it.
The tacterians find this as a hostile threat, And sence they keep coming even after a message about why we are invading, We have come to the conclusion YOU shot the emp at the dreii, We WILL fight, You do realize however, that you are facing inter-galactic nations? Surrender, than noone gets hurt and, if you somehow make ammends to the dreii, We will even help you expand more.
Though they are still a pre-warp society, the Eularian place a number of their Deployable Defence satalites, ID:1906290, around the system to give these innocents a chance agenst the Tactarian ivasion. They are programed to only attack Tactarian ships and will not retaliate even if fired upon by any non-Tactarian vessil.