 The political situation deteriorated further as Stjepan Radić of the HSS was assassinated in the Yugoslav Parliament in 1928, leading to the dictatorship of King Alexander in January 1929.The HSS, now led by Vladko Maček, continued to advocate the federalisation of Yugoslavia, resulting in the Cvetković–Maček Agreement of August 1939 and the autonomous Banovina of Croatia.The Yugoslav government retained control of defence, internal security, foreign affairs, trade, and transport while other matters were left to the Croatian Sabor and a crown-appointed Ban.