On Dec. 14, Kosovo’s parliament took a step that the Serbian government had warned could lead to military intervention: It voted to form an army. Months after Serbian President Aleksandar Vucic and his counterpart in Kosovo, Hashim Thaci, shared a stage and discussed ongoing negotiations to bring lasting peace to the Balkans, the region seems to be tipping back to the bad old days.
See at: https://www.worldpoliticsreview.com/articles/27076/are-the-bad-old-days-coming-back-in-the-balkans