The article deals with the deep analysis of current cooperation of the countries of North-East Asia (NEA) on the formation of environmental policy in order to regulate further relationships, improve the ecological, socio-economic well-being of the population living in global instability. This consolidation includes geographically six states: China, Democratic People’s Republic of Korea, Mongolia, the Republic of Korea, Russian Federation and Japan). The format of subregional geographic approach in the comprehensive activities of the UNESCAP (Economic and Social Commission for Asia and the Pacific of UN), including the environmental sphere, turned out to be successful. Thus, the Subregional Program of North-East Asia for Cooperation in the Field of Environmental Protection (NEASPEC) became the most important and effective policy instrument in the 21st century. The development of sub-regional cooperation in the field of low-carbon urban spaces continues as a promising platform to address the challenges of global climate change and rapid urbanization – NEA LCCP (North East Asia Low Carbon City Platform). The article presents the results of the initiated Russian research on the example of the administrative center of the subject of the Siberian Federal District – Irkutsk – a large cultural, historical and economic city of the Baikal natural territory.