The Angolan civil war was fought between the pro-western UNITA and the communist MPLA and had the characteristics typical of a Cold War era proxy war combined with a resource fueled struggle for control of the state apparatus between two rival strongmen. Regional countries were involved according to their Cold war alignment, the MLPA was even supported by Cuban troops. Oil production began to grow, but it was not a significant proportion of government revenue until towards the end of the period, most funding came from Soviet support.