Quote Originally Posted by Martok
I've noticed this as well. The Germans are probably the biggest backstabbers in the game--aside from the Sicilians, of course, who aren't to be trusted in any case.
Hmf, the Sicilians are my most loyal allies... After they been trapped on Malta without a large navy that is

Declaring war on an ally gives 1 loss in influence. A failed invasion, causing a civil war is the best revenge on that treacherous ally.