Alright, this is driving me crazy. So I send my survey through a wormhole, and he meets the Drengin on the other side of the map. It's gigantic size, so they're pretty far away, but that's something I'll have to deal with later. Okay. Also meet the Thalan on the way back. About 30 turns later the Drengin declare war on me. I'm middle of the pack militarily of the people I can see, and the Thalan are lagging behind. Why would the Drengin declare on me, whom they can't get to and probably won't be able to get to for a while, instead of declaring on the Thalan, whom they've not been at war with? This is about turn 150 on Normal difficulty.
If this was just once, okay, but I've had a fair number of games where I've been war-decced on from races that can't possibly get to me. Is there a reason this happens? The Krynn have done it to me once or twice as well. It seems they should wait until they can reach me before they declare? Any thoughts/reasons?