Ecuador has negotiated bilateral treaties with other countries, besides belonging to the Andean Community of Nations, and an associate member of Mercosur. It also serves on the World Trade Organization (WTO), in addition to the Inter-American Development Bank (IDB), World Bank, International Monetary Fund (IMF), Corporación Andina de Fomento (CAF) and other multilateral agencies. In April 2007, Ecuador paid off its debt to the IMF, thus ending an era of interventionism of the Agency in the country.