Debate continues as to the transformations in terrorism evidenced by the September 11 attacks and since that time. Some, including the former U.S. President, point to changes in the nature of terrorism and argue that September 11 constituted a wholly new form of terrorism that demanded a novel...

Because of the difficulties of distinguishing friend and foe, security and insecurity, or even war and peace, terrorism appears to be an endemic and endless risk. The embedded nature of the terrorist risk appears to demand the treatment of one's neighbour as potentially friend and foe. One of...

The perpetual inventory method used for the construction of education data per country leads to systematic measurement error. This paper analyses the effect of this measurement error on GDP regressions. There is a systematic difference in the education level between census data and observations...