The key question is, what is the role of rationality? And a more importantly, how doe think about rationality? I want to start with a quote you writeq. You say that you have grown sceptical of many popular theories of non state organized violence. Non state organized violence, for example, i question policies based on slogan such as radical islam and other national or religious identities. Instead of come to appreciate science based approaches to national security,. particualy those based social science and economics.