Immediately after the 1 December proclamation, negotiations between the National Council of Slovenes, Croats and Serbs and the Serbian government resulted in agreement over the new government which was to be headed by Nikola Pašić. However, when this agreement was submitted to the approval of the regent, Alexander Karađorđević, it was rejected, producing the new state's first governmental crisis. Many regarded this rejection as a violation of parliamentary principles, but the matter was resolved when the regent suggested replacing Pašić with Stojan Protić, a leading member of Pašić's Radical Party. The National Council and the Serbian government agreed and the new government came into existence on 20 December 1918.