Serbia is home to a large Russian and Belarusian community, which has increased in number since the full-scale invasion of Ukraine. But the small Balkan country was already a popular destination for Russians and Belarusians looking to move abroad. Among this older population of Russian and Belarusian immigrants, those who want to adopt Serbian nationality have been facing administrative difficulties for the past two years, resulting in them becoming stateless. FRANCE 24's Laurent Rouy, Aleksandar Cvrkotic, Edward Godsell and Paul Murray report.