Here is the north:
Oh, note the gold, piety and prestige and stability on the screenies. As you can see, Russia is basically under Byzantine control exclusively, and I have the back end. The Brown provinces are the Tribe of Sames. I’m as far north as I want to go in this direction. I may try and grab the two blue provinces that are not me before Byzantium does. I brought up the province of Bilyar, so you can see it to the left.