Dr Agarin is interested in relationships between the state and society, interrelations between the majority and the minority, issues relating to non-discrimination in the wider Europe and the impact of European integration broadly conceived on societal change and dynamics in political institutions. At the heart of it, is the interest in ethnic politics and their impact on transition from communism in Central Eastern European states.

Using the cases of institutions tasked with minority protection, he investigates how democratising states cooperate with one another as well as with international organisations to reduce ethnic tensions domestically and ensure peace and stability in postcommunist states.