What is ethnicity? What does it share with nationalism and in what respects is it different? Why do ethnic groups fight violently and kill wantonly, especially after living peacefully for a long time? Under what conditions do they manage their relations peacefully? When do they become nationalistic? Does ethnic conflict mark the politics of poor countries, or is it a wider phenomenon? Do people participate in ethnic insurgencies because of greed or grievance? Will ethnic groups disappear as modernity proceeds further? How should liberals look at nationalism? Is ethnicity, or ethnic conflict, best studied in a small-n, or a large-n, methodological frame?