The document discusses the Post-Disaster Needs Assessment (PDNA) conducted following the volcanic eruption in Goma, Congo, on May 22, 2021, affecting around 2 million people. It outlines the objectives, rationale, and key principles of the PDNA process, which serves as a collaborative tool for assessing damages and planning recovery efforts led by national authorities with support from international agencies. The success factors highlighted include government leadership, national expertise, and a focus on integrated recovery planning.