Part 2 of 2 Welcome to the 33rd edition of The Management of Security Cooperation produced by the Defense Institute of Security Assistance Management (DISAM). DISAM serves as a Defense Security Cooperation Agency (DSCA) institution to provide consolidated professional training and education for the security cooperation workforce. Since its initial publication in the spring of 1980, this textbook has been commonly referred to as the "Greenbook" by virtue of its green cover. This Greenbook edition, at the time of publication, incorporates the most current information available regarding security assistance and security cooperation programs. It explains the wide range of DOD activities and relationships involved in developing and managing various types of security cooperation programs, including "Building Partner Capacity" programs, in addition to the traditional Department of State (DOS) security assistance programs. Readers should be aware that the Greenbook is an academic document. It is intended to function as a resource to aid in the instruction and understanding of the multi-faceted and highly interactive world of security cooperation. It does not set policy, precedent, or procedures. The views, opinions, and conclusions expressed or implied herein are those of the authors or editors and are not to be construed as representing official policies of the US government or any of its departments and agencies.