This article investigates whether a new political regime's institution
al type and the political composition of its geographic neighborhood i
nfluence patterns of intraneighborhood militarized conflict. An event
count model is used to analyze data on 360 new political regimes. Vari
ables assess attributes of each new regime's geographic neighborhood,
including size, political composition, stability, the presence of alli
ances, the presence of major powers, the distribution of capability, a
nd the frequency of militarized disputes initiated by and against new
regimes. Results show evidence of an interactive relationship between
a new regime's type, the political composition of its neighborhood, an
d militarized disputes. However, independent of the political composit
ion of their neighborhoods, new democratic regimes are less likely to
initiate disputes against neighboring states. Furthermore, an inverted
U-shaped relationship obtains between the degree of democracy in a ne
ighborhood and the rate at which new regimes initiate disputes against
neighboring states. The coherency of regimes in a neighborhood, rathe
r than their type, may play an important role in subsequent patterns o
f conflict.