Post-Cold War military reforms inThis article examines patterns of convergence and divergence in post-Cold War British, French and Germany military reforms and finds that it is possible to identify increasing levels of convergence in the objectives, instruments and institutional forums of defense policy. However, it uncovers significant divergence in the temporality of reform processes.1 The study argues that these patterns of convergence/divergence cannot be explained through a focus on the mediating role played by 'national strategic cultures' -'culturally-bounded' and 'institutionally-embedded' norms that 'predispose societies in general and political elites to certain patterns of behavior'. 2 through an examination of the role of 'political/norm entrepreneurs' within the core executive or actors within the wider security policy subsystem 3 , in reshaping the three layers of belief systems (peripheral, operational and central beliefs) of which strategic cultures are composed. 4 Nor is an examination of the impact of civil-military relations on the organizational culture of defense ministries and military establishments a sufficient account of policy change.5 'Culture' emerges not so much as a cause of action as a tool, resource and instrument for policy leaders concerned with the domestic political and temporal management of reform.The analysis finds that 'international structure' is the key source of change and convergence in the objectives, instruments and institutional forums of defense policy. 6 However, neo-realist accounts neglect the impact of domestic political factors in constraining the autonomy of the core executive to respond to systemic power shifts over the short-medium term and cannot adequately account for temporal divergence in military reform amongst states of broadly comparable relative material power capabilities and 'external vulnerability'.7 Hence neoclassical realism, that emphasizes the primacy of 'international structure', but also integrates the intervening role played by 'unit-level variables', such as domestic power relationships and strategic leadership, emerges as the most convincing account of convergence/divergence in military reform. As Zakaria argues: 'Foreign policy is made not by the nation as a whole but by its government. Consequently what matters is state power, not national power. State power is that portion of national power the government can extract for its purposes and reflects the ease with which central decision-makers can achieve their ends'. 9 Taliaferro highlights how states which are confronted with the same threat vary in their ability to extract and mobilize resources from domestic society: unit-level variables -state institutions, ideology and nationalism -affect whether and when states choose innovation, emulation or the continuation of existing military strategies. 10 This article responds to the research agenda outlined by Sten Rynning
11, and Gideon Rose 12 by focusing specifically on the impact of different state structures and domestic material p...