Eugen Systems is showing off quite a bit of destruction in their trailer that gives us a view of what happens when diplomacy fails badly. Taking a cue from Starcraft, they offer three different and unique playable factions, but this doesn't look to play like Starcraft at all. The trailer shows off nuclear missiles, rail-guns, and a futuristic way to fry your enemies with electricity shot down from space. All this and more are shown in all their glory in the trailer below.
Details can be found at the Act of Aggression page.