In Leo Strauss and Anglo-American Democracy Havers contends that the most troubling implication of Straussianism is that it provides an ideological rationale for the aggressive spread of democratic values on a global basis while ignoring the preconditions that make these values possible. Concepts such as the rule of law, constitutional government, Christian morality, and the separation of church and state are not easily transplanted beyond the historic confines of Anglo-American civilization, as recent wars to spread democracy have demonstrated.