In one of recent games I saw what happens to the Russia Railroad spawn in Vladivostok. The settler party spawned, but got kicked out of the tile by Korean culture in to a Japanese culture spot near Sapporo (I guess the had OB with Japan; or were at war), but the spot was blocked by marsh and Korean culture, so they were stranded there until I, as Brazil, liberated Korea for China. Then the party wandered north and founded a crappy city called Nikolaevsk-na-Amur (or something like that).