Hi Everyone,
Sorry if this topic has been discussed before, I'm new to the game and was wondering if there is a way to warn of alien ships in my space without starting a war? I've used the diplomacy and most of the time this works but sometimes I get ignored and they just head deeper into my territory. At this point I want to go and shoot them down but I have to start a war to do so.
Anyway to blow the invader away on the down low? 
