Caracala's Wedding Alliance

Caracala is unmarried and childless. His wife, portila, was exiled and then executed. And the parthian king refuses. If it goes ahead, it's the first time that the roman empire has actually used a wedding alliance on the emperor level. But cassius dio says that artabanus saw straight through it as a pretext for war. He may have been thinking about the possibility of an eir and thought there was no suitable senatorial woman for him to marry cause that might then elevate her male relatives.