Lateral pressure theory seeks to explain the relationships between domestic "growth" and international "behavior". The causal logic runs from the internal drivers, the "master variables" that shape the "profiles of states"—through the intervening effects of socially aggregated and articulated "demands" and institutional "capabilities"—toward modes of external "behavior" designed to meet demands given the capabilities at hand (Choucri and North, 1989). To the extent that states extend their behavior outside territorial boundaries—driven by a wide range of capabilities and motivations—they are likely to encounter other states similarly engaged. Intersection among "spheres of influence" is thus the first step of the dynamics leading to conflict and violence. The subsequent developments are contingent on the actors' intents, capabilities, and activities. Framed thus, the theory addresses the sources and consequences of transformation and change in international relations.