In conflict zones around the world, the phenomenon of foreign insurgents fighting on behalf of local rebel groups is a common occurrence. They have been an increasing source of concern because they engage in deadlier attacks than local fighters do. They also violate international laws and norms of citizenship. And because of their zeal, their adversaries - often the most powerful countries in the world - are frequently incapable of deterring them.

Foreign Fighters have made headlines in recent wars in Afghanistan, Iraq, and Syria, and the term is widely equated with militant...

Biotechnology refers to the many procedures used to modify living organisms for human purposes, from the cultivation of plants and genetic engineering to biological weapons and biorobots. Today, the R&D in emerging fields of biotechnology, including human enhancement and direct-effect genetic weapons, may very well change the nature of war and international politics. This biotech revolution in military affairs will offer great advantages to the United States and other technologically advanced states, but this raises many new questions of just war and bioethics. This book contextualizes the...