Violent conflict is increasingly viewed as a factor related to sustain
able development. This article argues, based on the well-established t
heory of lateral pressure originally proposed by Choucri and North in
1975, that the relationship arises because the same factors that affec
t sustainable development also influence conflict, namely population,
technology, resources, military force, and trade and bargaining, while
conflict, in turn, affects these variables. The theory is tested with
a system dynamics model that includes international as well as domest
ic violent conflict, calibrated to seven countries in southern Africa
and six OECD countries, The results show a number of situations in whi
ch conflict is perpetuated in a cycle that is difficult to break. (C)
1998 John Wiley & Sons, Ltd.