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Working Paper
Immigration policy and counterterrorism
A terrorist group, based in a developing (host) country, draws unskilled and skilled labor from the productive sector to conduct attacks at home and abroad. The host nation chooses proactive countermeasures, while accounting for the terrorist campaign. Moreover, a targeted developed nation decides its optimal mix of immigration quotas and defensive counterterrorism actions. Even though proactive measures in the host country may not curb terrorism at home, it may still be advantageous in terms of national income. Increases in the unskilled immigration quota augment terrorism against the ...
Working Paper
Measuring Geopolitical Risk
We present a news-based measure of adverse geopolitical events and associated risks. The geopolitical risk (GPR) index spikes around the two world wars, at the beginning of the Korean War, during the Cuban Missile Crisis, and after 9/11. Higher geopolitical risk foreshadows lower investment and employment and is associated with higher disaster probability and larger downside risks. The adverse consequences of the GPR index are driven by both the threat and the realization of adverse geopolitical events. We complement our aggregate measures with industry- and firm-level indicators of ...
Journal Article
Political economy of state homeland security grants
Journal Article
Increasing political freedom may be key to reducing threats
The root causes of terrorism might not be poverty and lack of education, as many believe. Rather, the lack of civil liberties, political rights and the rule of law might be more influential.
Working Paper
Foreign aid as counterterrorism policy
We present a model where foreign aid bolsters proactive counterterrorism efforts of a foreign nation that is a source for transnational terrorism. Our two-stage game has the donor country choosing a first-stage contract consisting of terrorism-fighting tied aid and general assistance. In stage 2, the donor decides its defensive measures, while the recipient country chooses its proactive measures. An interesting finding is that the foreign enforcement best-response function is likely to reflect strategic substitutes, while the donor's enforcement best-response function is apt to indicate ...
Journal Article
Commentary on \\"Exogenous shocks and the dynamics of city growth: evidence from New York\\"
This article is commentary on a paper presented at a conference organized by the Federal Reserve Bank of New York in April 2005, "Urban Dynamics in New York City." The goal of the conference was threefold: to examine the historical transformations of the engine-of-growth industries in New York and distill the main determinants of the city's historical dominance as well as the challenges to its continued success; to study the nature and evolution of immigration flows into New York; and to analyze recent trends in a range of socioeconomic outcomes, both for the general population and recent ...
Working Paper
Poverty, political freedom, and the roots of terrorism in developing countries: An empirical assessment
This paper finds that political freedom has a significant and non-linear effect on domestic terrorism, but this effect is not significant in the case of transnational terrorism. Some of our other novel findings are that while geography and fractionalization may limit a county?s ability to curb terrorism, the presence of strong legal institutions deters it. ; Earlier title: "What spurs terrorism in developing nations?"
Journal Article
Consumer confidence after September 11
The terrorist attacks on September 11 dealt a serious blow to the U.S. economy. The damage included the tragic loss of human life, massive property destruction, and disruptions to the travel and shipping industries. But immediately after the attacks, many observers also worried about the possible harm to business and consumer confidence. Although the effects on business confidence are hard to measure, regular surveys of households make it easier to assess the effects on consumer confidence. These surveys show that consumer confidence was surprisingly resilient.> Faced with this resilience, ...