Special Note: Please note that this scenario is meant to be read as entertainment, not as an accurate prediction of the future. Also note that the viewpoints and opinions that may come across in this scenario are not necessarily the viewpoints and opinions of the author.
Vladimir Putin's reign over Serbia (as a member of the Eurasian Union) between 2015 and 2025 would economically drain the resources of Serbia; forcing them to offer slave-labor wages to people who were unemployed, homeless and could not properly support their families. Collectivism became the way of life again and openly practising Marxist-Leninism became an accepted, if not an expected, way of life for the typical Serbia politician of the early/mid-21st century.
Groups of Serbian reformists and nationalists had enough of the corrupt rule of the Eurasian Union and wanted to defect to the United States of Europe. However, the hard-liners were in power at that time and they supported the Eurasian Union. The reformists appealed to Canadamerica and the United Nations for help while the nationalists started to write letters to the local media about their plight. During March 2042, a general strike broke out because the Eurasian Union wanted to disband the labor unions until the reformists and nationalists were ousted from Serbian politics. Boycotts of Serbian-made products occured and products from places like Germany, Italy, France and Spain soon flooded the black markets.
By late April 2042, full-scale rioting took place on the streets of major cities. The citizens (aided by the reformists) were fighting tooth-and-nail with the robotic military police (even the Eurasian Union had to comply with the Universal Peace Charter of 2037; which prohibited humans from being used for combat purposes). Canadamerica along with Iceland, Finland and the United Kingdom sent some forces to help the reformists and nationalists gain control of the Serbian government. The United States of Europe were threatened with military action if they brought troops into Serbia.
On July 3, 2042, the reformists and nationalists seized control of the Serbian government with the help of the citizenry, the Popular Press and Western assistance. At a meeting with the United States of Europe, they officially renounced the Eurasian Union and become a enclave of the United States of Europe. Sixty years later, surviving members of the Serbian National Coup would be honored by the government of the United States of Earth for their gallant effort in keeping democracy alive in Serbia.