Less than twenty years ago, a young, ethnic Albanian student leader called Hashim Thaçi led a revolution against Slobodan Milošević. During a period when Western military engagement unleashed violent sectarianism, global terrorism, and became a catalyst for the biggest exodus of migrants since the Second World War, the 1999 NATO intervention in Kosovo remains a unique example of a process that led to a peaceful transition from vicious ethnic war to modern democracy. Thaçi is now President of Europe’s youngest country.