The block as far as I knew was always SV, Nothoi and Caelint/Irondale.
I am not sure about what happened in Caelint after I left (ie when Tiberius took over as ruler), but I can assure that there was
never any formal agreement between SV and Caelint while I was ruler.
SV and Nothoi have always had close ties, as far back as I can remember, but not Caelint and SV.
I don't believe SV ever once participated in the Gotland/Caelint war while I was there.