We try to find an inter-solution of harmonious balance between Nature and Human. We also recognize dependency of humans on nature. we need also intemational peace dependency of humans on nature. We gave our message to the audience how does environmental peacebuilding become that it is significant for us to recognize meanings, implications and contexts of Peacebuilding for E∞system: Peace from ‘Korean Cherry Trees and World Peace' (March 22, 2022) at the Korean Garden of American University, which succeed spirit of 2021 Marseille’s World Conservation Congress in September 2021.