type="main" <p>Harrison and Wolf claim that interstate ‘wars are becoming more frequent’. This is an alarming claim deserving serious attention. It is also a highly surprising claim, since recent conflict research tends to find the opposite: incidences of violent conflict are becoming less...</p>

type="main" <p>We show that the frequency of bilateral militarized conflicts between independent states has indeed been rising steadily over the last century. We show that this finding is not driven by any selection bias in our data but a fact that needs to be explained. Finally we highlight our...</p>

Monopoly is a particular problem in markets where experience goods are traded, since the consumer cannot respond to bad experiences by switching repeat purchases to another supplier. New evidence shows how the defence ministry as buyer in the Soviet market for military goods responded to this...