Here's a possible example:
Since we know the Zuma only take actions in response to what human players do or say to them, one possibility for the events is thus:
Madina, knowing that it would be fighting a civil war (from either sides perspective) decides that it doesn't want Terran interference in their war so that their side has a better chance of winning. This decision is made because the side expects Terran would side against them. Thus, this Madinan faction decides to give the Zuma 2000 bushels of food to invade Terran for a bit to make them wary about leaving their borders. The Zuma comply because for some unknown reason they need a lot of food for worthless regions. They make up some random excuse for the invasion and thus Terran gets attacked.
(This is purely 100% made up, although I guess it could be true, but is merely to illustrate that what someone thinks is going on isn't always the truth.)
See this? This is fantastic. Why can't the rest of you see that you can play a game with a GM-controlled faction?
I mean, it's like Everquest, where the gate guards are level 299, and the highest character is 50. Don't be stupid and try and attack them, just leave them alone, or use them to defend yourself.
If you have a legitimate suggestion for the Zuma GM, send him a PM, here on the forums. I've done it before, and he wrote back a decent response. He's a decent guy, trying his best to play the GM characters that Tom gave him to play, in the way that Tom told him to play them.
Ever notice that Tom never posts to this thread? It's probably because he has better things to do, but has anyone considered that the Zuma GM is Tom? Consider that--it's his game, he wants to play an OP GM realm, put up or shut up.
And no, I don't think it's really Tom. But the GM is playing Haktoo and Screamer and Fang Fang and all the rest according to his instructions.
So either learn to play with the Zuma, learn to play against the Zuma, learn to ignore the Zuma, die, or move your character. Pick one.