Myth of Hegemony: The Role of Buffer States in the Habsburg Empire's Decline as a Great Power

Why did the Habsburg Empire fall? Historians have attributed its collapse to a range of factors, including economic backwardness, ethnic tensions, poor military performance, and diplomatic blunders. This thesis argues that the Habsburg Empire’s decline as a Great Power was primarily due to the collapse of its buffer state strategy. The loss of key buffer states—once essential for securing the empire’s vulnerable borders and supporting its defensive wars—was decisive in its military defeats by France in 1859 and Prussia in 1866. Drawing on diplomatic correspondence and interactions with buffer states such as the Kingdom of Sardinia and the Papal States in Italy, as well as Bavaria and Württemberg in Germany, this study reveals a fundamental misalignment between the Habsburg Empire’s grand strategy and the means to achieve it. A rigid commitment to conservative ideology drove the empire to adopt aggressive diplomacy that alienated its buffer states, ultimately eroding their loyalty and contributing to Austria's defeats in 1859 and 1866.The Habsburg lesson illustrates not only the strategic importance of buffer states and effective diplomacy but also affirms a core principle of grand strategy: a Great Power should always align its ends with its means.