Book excerpt: The European Tributary States of the Ottoman Empire is the first comprehensive overview of the empire’s relationship to its various European tributaries, Moldavia, Wallachia, Transylvania, Ragusa, the Crimean Khanate and the Cossack Hetmanate. The volume focuses on three fundamental aspects of the empire’s relationship with these polities: the various legal frameworks which determined their positions within the imperial system, the diplomatic contacts through which they sought to influence the imperial center, and the military cooperation between them and the Porte. Bringing together studies by eminent experts and presenting results of several less-known historiographical traditions, this volume contributes significantly to a deeper understanding of Ottoman power at the peripheries of the empire.