This paper focuses on the purpose and role of the g7+, which is composed of 20 fragile countries, from the view of peacebuilding and statebuilding. Firstly, the UN’s peace activities after the Cold War are summarized in Sect. 1.2. And in 2023, the UNSG proposed the document, A New Agenda for Peace, in response to distrust of the UN, especially the Security Council. And then I introduce “Hybrid Peacebuilding” behind local values in Sect. 1.3. Section 1.4 describes how Xanana Gusmão, who is the founding father of Timor-Leste, promoted the g7+ group of fragile states. Many of these countries have natural resources but the reality is that the income from these resources is not being used for nation-building, or even for the peace and security of people’s lives. The g7+ aims to strengthen governance by building effective relationships with donor countries by sharing the various problems faced by these fragile states.