This document discusses a flagship initiative to improve telecommunications infrastructure in the Greater Mekong Subregion (GMS). The initiative aims to (1) expand telecommunications networks to provide affordable voice and internet access, (2) reduce the "digital divide" in the GMS, and (3) facilitate private investment and interconnection of national networks. It involves completing optic fiber cable transmission networks, implementing policy reforms to encourage private sector participation, and harmonizing technical standards across countries. Key components include regional studies, policy advice, and financing priority fiber optic cable routes to develop North-South, East-West, and economic corridor networks.