The UN Secretary-General’s Peacebuilding Fund (PBF) is the organization’s financial instrument of first resort to sustain peace in countries or situations at risk or affected by violent conflict. The PBF may invest with UN entities, governments, regional organizations, multilateral banks, national multi-donor trust funds or civil society organizations. From 2006 to 2017, the PBF has allocated $772 million to 41 recipient countries. Since inception, 58 member states contributed to the Fund, 33 in the present 2017-2019 Investment Plan. The Fund works across pillars and supports integrated UN responses to fill critical gaps; respond quickly and with flexibility to peacebuilding opportunities; and catalyze processes and resources in a risk-tolerant fashion.