After the Second Illyrian War, Pinnes was again proclaimed king. Pinnes was not favoured among the Illyrians and in 218 BC Scerdilaidas took over his nephew's role and became king. Under pressure from the Carthaginians in Spain, the Romans did not intervene. In 220 BC Scerdilaidas entered into an alliance with Philip V of Macedon. Scerdilaidas had aided Philip during the Social War against the Spartans but this produced little profit for him. Scerdilaidas' support for Macedon against the Aetolians was curtailed by 'plots and conflicts' caused by rulers of various cities.