At its 2003 Annual General Meeting, Commission C12 of the International Union of Pure and Applied Physics (IUPAP) made a formal decision to establish an ad-hoc Committee on International Cooperation in Nuclear Physics (CICNP). The membership of CICNP was optimized, by inclusion of the Chair and Vice-Chair of C12, as well as the Chairs of NSAC and NuPECC and representatives of key laboratories world-wide. Considerable care was also paid to the geographic distribution of members, in order to ensure appropriate representation from the whole nuclear physics community.