The United States of America. Aka a World Leader in Foolish Bailouts, other Countries Loving Aunt (don't pay me back) and Ridiculous Overseas Outsourcing.
After the 2008 crash, governments all over the world borrowed money to prop up their banks and economies. The amount borrowed far exceeded the capacity of the World Bank and IMF. Who did they borrow from?
I think the World Bank should just cancel all debts, and say ok, everybody is even and we will all start over.