While preceding military coups in Argentina were aimed at establishing temporary, transitional "juntas", the "Revolución Argentina" headed by Onganía aimed at establishing a new political and social order, opposed both to liberal democracy and to communism, which gave to the Armed Forces of Argentina a leading role in the political and economic operation of the country. The political scientist Guillermo O'Donnell named this type of regime "authoritarian-bureaucratic state", in reference both to the "Revolución Argentina", the Brazilian military regime (1964–1985), Augusto Pinochet's regime (starting in 1973) and Juan María Bordaberry's regime in Uruguay.