The advent of the CRISPR/Cas9 class of genome editing tools is transforming not just science and medicine, but also law. When the genome of germline cells is modified, the modifications could be inherited, with far-reaching effects in time and scale. Legal systems are struggling with keeping up with the CRISPR revolution and both lawyers and scientists are often confused about existing regulations. This book contains an analysis of the national regulatory framework in eighteen selected countries. Written by national legal experts, it includes all major players in bioengineering, plus an analysis of the emerging international standards and a discussion of how international human rights standards should inform national and international regulatory frameworks. The authors propose a set of principles for the regulation of germline engineering, based on international human rights law, that can be the foundation for regulating heritable gene editing both at the level of countries as well as globally.