The Strategic Logic of Credit Claiming: A New Theory for Anonymous Terrorist Attacks

In theory, terrorism is a political communication strategy for groups to convey their grievances and the costs of ignoring them. In practice, though, terrorist groups take responsibility for just a small portion of their attacks. Rather than getting credit for the violence, terrorist leaders generally deny their operatives committed it. This theoretical and empirical disconnect may explain why scholars have ignored the subject of unclaimed attacks despite these being the norm. With a mixed-methods research design, our study helps to fill this lacuna by proposing and testing a new theory to help account for variation in which attacks are claimed.     

The social sub-optimality of competitive elections

One of the common normative assumptions about elections is that competitive elections are inherently good, and non-competitive elections are problematic. This paper challenges that assumption. At the level of individual elections, competitive elections produce either sub-optimal results or trivially optimal results, but competitive elections are never uniquely optimal. In aggregation, competitive elections for a set of offices are inherently sub-optimal. From a procedural perspective, the circumstances in which competitive elections are appropriate are rare, and from a diagnostic perspective, we cannot conclude that there are problems in the electoral system based on a lack of competition. In the context of social choice theory, competitive elections are not inherently good.     

The relative electoral impact of central party co-ordination and size of party membership at constituency level

Over the past decade, clear evidence has been produced showing that effective constituency campaigning in British general elections can lead to better electoral performance. This evidence has challenged the received wisdom that only national campaigning is significant and that efforts at local level are meaningless rituals. Denver et al. have focused on the role of the national parties in strengthening local campaigns in target seats; Seyd and Whiteley, by contrast, have stressed the importance of local party membership. This article attempts to assess the relative electoral impact of national party co-ordination and constituency party membership and suggests that the impact of these two factors varies by party.     

Physical and chemical evidence remaining after the explosion of large improvised bombs. Part 1: firings of ammonium nitrate/sugar and urea nitrate

Recent criminal acts in the United Kingdom, United States and other countries have demonstrated the dangers to public safety from the criminal use of improvised explosives on a large scale. Four sets of trials were carried out over four years, partly in collaboration with the United States Federal Bureau of Investigation, involving the firing of large bombs, mostly fertilizer based. The principal objectives of the firings were to measure the physical effects of the explosions upon objects representative of those that would be found at a real bomb scene and to recover any chemical traces deposited on these objects. The results are intended for use as an aid in determining the approximate size and type of an explosive employed in a terrorist attack. This paper describes the background behind the trials, the procedures for preparation of witness materials and charges, and the collection and analysis of physical and chemical evidence.