In recent years there has been a growing awareness of the need to write a global history of law of nations that disengages from parochial national and regional histories. It is hoped that these developments will bring centre-stage the work of Charles Henry Alexandrowicz (1902–75), a scholar who was among the first to conceptualize the history of international law as that of intersecting histories of different regions of the world. Alexandrowicz was aware that, while the idea of writing a global history of law of nations is liberating, there is no guarantee that it will not become the handmaiden of contemporary and future imperial projects. What were needed were critical global histories that provincialize established Eurocentric historiographies and read them alongside other regional histories. This book aims to make Alexandrowicz’s writings more widely available and read. The Introduction to this book sums up the context, issues, problems, and questions that engaged Alexandrowicz, as well as some of his central theses. His writings are a gold mine waiting to be explored. Alexandrowicz contributed to the effort of promoting the idea of international rule of law by rejecting a Eurocentric history and theory of international law.