The Fifth Meeting of the Subregional Investment Working Group (SIWG5) was held on 13-14 October 2005 at the Raffles Hotel Le Royal in Phnom Penh, Cambodia. The key objectives of the meeting were to: (i) review and discuss the progress of the initiatives made since the previous meeting; (ii) exchange information and ideas about facilitating investments into the member countries and the region as a whole; and (iii) establish the near and medium term future directions and priorities of the SIWG.