During the Special Session of the D-8 Commission Meeting held under the chairmanship of Turkey, UNCTAD presented the key elements of the joint D-8 Organization for Economic Cooperation - UNCTAD Guiding Principles for Investment Policy making. Important agenda items regarding the forthcoming D-8 Summit Meeting were discussed. In January 2020, countries members of the D-8 Organization for Economic Cooperation (Bangladesh, Egypt, Nigeria, Indonesia, the Islamic Republic of Iran, Malaysia, Pakistan, and Turkey) endorsed a set of Guiding Principles for Investment Policy making jointly developed with UNCTAD. The Principles come at a time when sustainable development-oriented reform has entered the mainstream of investment policy making resulting in a large number of countries reforming their investment policies by adopting new approaches for national level action, developing new models for international treaty making, and concluding international investment agreements (IIAs) with provisions aimed at addressing sustainable development concerns.