The new edition of this widely used documents collection has undergone some significant changes. Important new documents have been added, including the Paris Agreement, the ILC Draft Conclusions on Identification of Customary International Law, and the Minamata Convention on Mercury. Other documents have been updated to include changes that have entered into force since the prior edition. In order to keep the collection to a manageable size, the section on arbitral and judicial decisions has been eliminated. The status appendix has been updated through the beginning of 2019.