The Emirate of Bulgar is huge in my current game having already swallowed Novgorod and taken Kiev down to a single province to say nothing of what they've done to the Cumans, Mordvins, and other assorted minor powers on the steppe. I don't know why they haven't created King of Rus yet. I'm kind of excited to see how they'll fare against the Mongols. I was fairly impressed but that got me thinking about which nations are typically successful when controlled by the A.I. Pereslavl (sp?) was always the dominant Russian power in my previous games. I realize this is an overly broad question but I'm curious what other people's impressions are since I'll never really be able to get a representative sample from my own games. Conversely, which A.I. nations tend to crumble? The Iberian Christian kingdoms rarely make it into the 1100's in my games. Croatia usually falls to Berber Muslims fairly early on in my games as well. It seems the HRE generally implodes early but it then reconstitutes itself after awhile if I don't interfere.