The paper addresses the philosophical presuppositions underlying the concept of the “international system.” It suggests that the international system is not a system in any technical sense of this term, but rather a static order – an international order – founded on international boundaries. Nor is there any place in reality that corresponds to the term “international” or, more broadly, the “international plane.” The international plane is a state analogous to the quantum state in physics – a quantum state writ (...) large. In reality, the international plane is reducible to an international event taking place on an international boundary. The international order of boundaries, in turn, is ultimately rooted in common sense and metaphysics – the two founding positions of modern philosophy. (shrink)