This timely second edition provides a thought-provoking introduction to international humanitarian law (IHL). Robert Kolb provides an updated exploration of the field through questions – which are at times challenging and controversial – in order to get to the very essence of the subject and give a fresh perspective. The result is an exposition of both the law as it stands, through its written and unwritten rules, and also of the uncertainties, gaps, controversies and practical problems which have arisen. IHL is revealed as a living tool, an ever-adapting means to an ever-remaining need of protection during times of armed conflict.