This volume investigates the evolving state of international legal norms and diplomatic practices as they stood in 1967. Edited by Ian Brownlie and Humphrey Waldock under the auspices of the Royal Institute of International Affairs, the text compiles scholarly analysis and documentation of legal developments. It provides a rigorous examination of treaty obligations, state sovereignty, and the application of international law in a post-war global context.

Experts and legal scholars recognize this yearbook as a foundational archival resource for historical research into mid-20th-century international jurisprudence. Readers frequently note the academic density of the prose, which is intended for practitioners and students of international law.