I would like to note two articles on security spending. I learned of the first by listening to the audio edition of The Economist , specifically Anti-terrorist spending: Feel safer now? . The article summarizes a report ( Transnational Terrorism , [.pdf]) by The Copenhagen Consensus , a think tank that analyzes government spending. The Economist says: The authors of the study calculate that worldwide spending on homeland security has risen since 2001 by between $65 billion (if security is narrowly defined) and over $200 billion a year (if one includes the Iraq and Afghan wars). But in either case the benefits are far smaller. Terrorism, the authors say, has a comparatively small impact on economic activity, reducing GDP in affected countries by perhaps $17 billion in 2005. So although the number of terrorist attacks has fallen, and fewer people have been injured, the imputed economic benefits are limited — just a tenth of the costs. That does not necessarily mean the extra spending...