What I want to know is, which realm is going to be crazy enough to take another whack at Sirion?
Oligarch (still called Duchiess of Southern Sirion, but the devs promised to look at the name once all the migration etc is finished) is already at war against Sirion and despite being a single city realm atm we're doing very well. Sirion's mobile force is severely weakened and they're losing battles in the open field even. At this point Sirion stands no chance of succesfully assaulting Oligarch City and the battles are on the open field. Oligarch is currently running a TO of Greatbridge. We had 3 nobles leaving I think due to the new rules, but that still leaves the realm with 16 nobles atm. Constant war against Sirion until it either splits up, or gives us Krimml is pretty much guarentied atm. Sirion is hellbend on destroying Oligarch.
Nivemus has shown that they'll never go to war against Sirion (had the opportunity since their Queen married the ruler of Oligarch, but then they voted against the newly formed alliance and destroyed it again).
Eponllyn wants to see more city state realms but has even gone as far as blocking Perdan access to Oligarch to assist Oligarch, so it's a safe bet to say Eponllyn also won't attack Sirion.
Caligus has been trough some strange things this last week, there is a small chance they might actually choose to fight Sirion, but don't count on it.
Perdan and Vix both would be inclined to fight Sirion, but are blocked by their neighbours pretty much (especially Perdan) and apparently they're planning to fight Eponllyn because of it. This means they'll have a war, but not against Sirion.
And then there's the new realms where nobody knows what they'll do.