How can states signal their alliance commitments? Although scholars have developed sophisticated theoretical models of costly signaling in international relations, we know little about which specific policies leaders can implement to signal their commitments. This article addresses this question with respect to the extended deterrent effects of nuclear… (More)
We study the influence of domestic political dissent and violence on incumbent dictators and their regimes. We argue that elites with an interest in preserving the regime hold dictators accountable when there is a significant increase in terrorism. To pinpoint the accountability of dictators to elites that are strongly invested in the current regime we make… (More)
This paper is the first to study decriminalization of homosexual acts quantitatively in a cross-national perspective with a large sample of countries over a period of several decades. Employing path dependence as its theoretical framework, this work explains how political, economic and legal institutions at the domestic and the international levels affect… (More)
In this paper we present an approach to identifying patterns of behavior preceding political instability events in countries from sampled factor data. This process is based on the concept of state-space back-chaining. A list of sampled, quantized factor data sampled over a range of discrete times define a " state-space " of a country , and the list of… (More)
This paper presents an analysis of the Provisional Irish Republican Army's (PIRA) brigade level behavior during the Northern Ireland Conflict (1970-1998) and identifies the organizational factors that impact a brigade's lethality as measured via terrorist attacks. Key independent variables include levels of technical expertise, cadre age, counter-terrorism… (More)
Comparative Configurational Analysis as a Two-Mode Network Problem: A study of terrorist group engagement in the drug trade.
In this paper, we present a holistic, integrated social science analysis of the leading indicators of WMD terrorism that advances what is known about the social conditions that foster WMD terrorism. This exercise illustrates how a multidisciplinary team of researchers, including political scientists, anthropologists and computer engineers combined… (More)