Yuri nods to show he understands, but refrains from revealing he doesn't know the names of all the Great Lakes. Close neighbors, then, close enough that maybe it isn't so surprising they're at each other's throats, given the kind of period Daine seems to be from. He refrains from saying that, too.

I hope you're right, he says, reluctantly starting again, this time eying the ground as he goes. But they didn't invade?