3.Enhancing intra-regional connectivity within ASEAN and its subregional grouping would benefit all ASEAN States through enhanced trade, investment, tourism and development. As all of the overland transport linkages will have to go through the mainland Southeast Asian countries of Cambodia, Laos, Viet nam and Myanmar, these countries stand to benefit the most through infrastructure development, and the opening up of remote inland and less-developed regions. All these efforts would significantly narrow the development gap within ASEAN.