Security Index Yearbook is a highly reputable source for professionals dealing with national security issues, especially arms control and weapons. It provides factual evidence, factual information, and deep site analysis by practitioners in the field. I recommend Security Index Yearbook to many colleagues in Egypt and the Middle East, and I myself return to it from time to time to double-check information I can get from others. I am happy to be associated with its International Editorial Board and commend all of them as well as the authors on the work they have done.