As of Thursday September 1, anyone with a car in northern Kosovo will need to get Kosovan plates, and any Serbian wanting to cross over Kosovo’s northern border will need to be issued with Kosovan travel documents. This new bureaucracy may sound mundane enough but it has threatened to start a new war in Europe. Serbian president Aleksander Vučić has declared the new regulations a provocation by Pristina to the 120,000-strong Kosovo Serbian minority most of whom live in the country’s north, many of whom receive Serbian government salaries paid in Serbian dinars, and all of whom are eligible to…