First published in 2017, “PI’s Guide to International Law and Surveillance” is an attempt to collate relevant excerpts from these judgments and reports into a single principled guide that will be regularly updated. This is the third edition of the Guide. It has been updated it to reflect the most relevant legal developments until December 2021.Despite its name, the Guide isn’t just aimed at lawyers. It aspires to be a handy reference tool for anyone engaging in campaigning, advocacy, and…