was subsequently banished from the kingdom. Opposition to the union seemed to subside somewhat for a time upon the publication of congratulations of Nicholas II of Russia to the king on his engagement and of his agreement to act as the principal witness at the wedding. The marriage duly took place in August 1900. Even so, the unpopularity of the union weakened the king's position in the eyes of the army and the country at large. Politics and the constitution King Alexander tried to reconcile political parties by unveiling a liberal constitution of his own initiative in 1901, introducing for the first time in the constitutional history of Serbia the system of two chambers (skupština and senate). This reconciled the political parties, but did not placate the army which, already dissatisfied with the king's marriage, became still more so at the rumors that one of the two unpopular brothers of Queen Draga, Lieutenant Nikodije, was to be proclaimed heir presumptive to the throne. Alexander's good relations and the country's growing dependence on Austria-Hungary were detested by the Serbian public. Two million Serbs lived in Austria-Hungary, with another million in the Ottoman Empire, although many migrated to Serbia. Meanwhile, the independence of the senate and of the council of state caused increasing irritation to King Alexander. In March 1903, the king suspended the constitution for half an hour, time enough to publish decrees dismissing and replacing the old senators and councillors of state. This arbitrary act increased dissatisfaction in the country. Assassination The general impression was that, as much as the senate was packed with men devoted to the royal couple and the government obtained a large majority at the general elections, King Alexander would not hesitate any longer to proclaim Queen Draga's brother as the heir presumptive to the throne. In spite of this, it had been agreed with the Serbian government that Prince Mirko of Montenegro, who was married to Natalija Konstantinović, the granddaughter of Princess Anka Obrenović, an aunt of King Milan, would be proclaimed heir presumptive in the event that the marriage of King Alexander and Queen Draga was childless. Apparently to prevent Queen Draga's brother being named heir presumptive, but in reality, to replace Alexander Obrenović with Peter Karađorđević, a conspiracy was organized by a group of Army officers headed by Captain Dragutin Dimitrijević, also known as "Apis", and Novak Perišić, a young Serbian Orthodox militant