The International Bank for Reconstruction and Development (IBRD) is a global development cooperative owned by 189 member countries. Created in 1944, it joins with the International Development Association (IDA) to form the World Bank. As the largest development bank in the world, it supports the World Bank Group's mission by providing loans, guarantees, risk management products and advisory services to middle-income and creditworthy low-income countries, and by coordinating responses to regional and global challenges.