Updated July 2014. From DDTC "Any person who engages in the United States in the business of either manufacturing or exporting defense articles or furnishing defense services is required to register..." ITAR "It is the contractor's responsibility to comply with all applicable laws and regulations regarding export-controlled items." DFAR Companies that provide defense goods and services need to know the rules; the ITAR provides the answers. The International Traffic in Arms Regulation (ITAR) is the defense product and service provider's guide book for knowing when and how to obtain an export license. This book provides answers to: Which defense contractors should register with the DDTC? Which defense commodities require export licenses? Which defense services require export licenses? What are corporate and government export responsibilities? What constitutes an export? How does one apply for a license or technical assistance agreement?