Greater Serbia the Kingdom of Serbia retreated from Durrës in April 1913 under pressure of the naval fleet of Great Powers, but it remained in other parts of Albania for the next two months. The secret military society called Unity or Death, popularly known as the Black Hand, headed by Serbian colonel Dragutin Dimitrijević Apis, which took an active and militant stance on the issue of a Greater Serbian state. This organization is believed to have been responsible for numerous atrocities following the Balkan Wars in 1913. In 1914, Young Bosnia member Gavrilo Princip assassinated Archduke Franz Ferdinand in Sarajevo, which set
Assassination of Archduke Franz Ferdinand Franz Ferdinand in Bosnia. On 21 June, Ambassador Jovanović met with Austro-Hungarian Finance Minister Bilinski. According to Serbian Military Attaché to Vienna, Colonel Lesanin, Ambassador Jovanović, spoke to Bilinski and "...stressed in general terms the risks the Archduke heir apparent might run from the inflamed public opinion in Bosnia and Serbia. Some serious personal misadventure might befall him. His journey might give rise to incidents and demonstrations that Serbia would deprecate but that would have fatal repercussions on Austro-Serbian relations." Jovanović came back from the meeting with Bilinski and told Lesanin that "...Bilinski showed no sign of attaching great importance