|Title of host publication||The Encyclopedia of Political Thought|
|Editors||Michael T. Gibbons, Diana Coole, Elisabeth Ellis, Kennan Ferguson|
|Place of Publication||New York and Oxford|
|Number of pages||2|
|Publication status||Published - Sep 2014|
International boundaries are a basic building block of the modern international state system. The international system dictates a clear spatial distinction between states. International boundaries are the agreed-upon delineation of the spatial allocation of one sovereign territory in relation to that of all others. From a formal perspective, the boundaries of a state delimit the area of applicability of a particular state's sovereignty and pose the only general limitation on the autonomy of sovereignties. Clear and defined boundaries are considered a precondition to the establishment of a state, and control over its boundaries is a sovereign prerogative, whereas an unauthorized breaching of state boundaries by other sovereign powers is considered a declaration of war.