Immanuel Kant, Perpetual Peace: A Philosophic Sketch (1795)

The classic source of modern idealism in international relations theory is Immanuel Kant’s 1795 essay “Perpetual Peace: A Philosophic Sketch.” There, the German philosopher (1724-1804) takes up the question of whether perpetual peace is the preserve of men in their graves. Answering in the negative, Kant delineates the conditions necessary for the establishment of perpetual peace among nations, argues that statesmen are morally obligated to seek those conditions, and assures us that those conditions will eventually obtain. He envisions the world slowly progressing toward a federation of independent republics at peace with one another.

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Montesquieu, The Spirit of the Laws (1748)

In addition to elucidating Montesquieu’s account of the liberalizing and pacifying effects of commerce, this essay will examine Montesquieu’s reflections on the practical foreign policy implications of the right of national self-preservation. Of particular importance in this connection are his accounts of the variation in foreign policy according to regime type, the value of confederation, and the role and limits of conquest. Examining these reflections, along with Montesquieu’s praise of England as the best regime, will help us to determine the character of a Montesquieuian foreign policy.

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