From the Introduction: "During the 10th replenishment of the Asian Development Fund (ADF XI), the Asian Development Bank (ADB) presented proposals to strengthen its capacity to assist ADF countries in responding to natural disasters. ADF donors appreciated the growing risks that natural disasters pose to sustainable development in ADF countries. After intensive discussions during three ADF XI replenishment meetings and other consultations, ADF donors agreed to pilot the Disaster Response Facility (DRF) in the ADF XI period, 2013–2016. ADB will report on the implementation progress of the DRF at the ADF XI midterm review, and discuss the future of the DRF with the ADB Board of Directors and ADF donors at the ADF XII negotiations. This paper presents the rationale, design, and other relevant aspects of the pilot DRF."