What does the future hold for Republican foreign policy? Hard Line demonstrates that the answer depends on who becomes the next Republican president. Dueck challenges the popular notion that Republican foreign policy today is beholden to economic interests or neoconservative intellectuals. He shows how Republican presidents have been granted remarkably wide leeway to define their party's foreign policy in the past, and how the future of conservative foreign policy will depend on whether the next Republican president exercises the prudence, pragmatism, and care needed to implement hawkish foreign policies skillfully and successfully. Hard Line reveals how most Republican presidents since World War II have done just that, and how their accomplishments can help guide future conservative presidents.