The International Bank for Reconstruction and Development (IBRD) is an international financial institution, established in 1944 and headquartered in Washington, D.C., United States; it is the lending arm of World Bank Group. The IBRD offers loans to middle-income developing countries. It is the first of five member institutions that compose the World Bank Group. The initial mission of the IBRD in 1944, was to finance the reconstruction of European nations devastated by World War II. The IBRD and its concessional lending arm, the International Development Association (IDA), are collectively known as the World Bank as they share the same leadership and staff.