International development charity, the Catholic Institute for International Relations (CIIR), is to change its name to Progressio at the start of 2006. Progressio is a Latin word meaning development and advancement, the very factors the organisation promotes among its partners, supporters and the general public. The name Progressio comes from Populorum Progressio, one of the central documents in Catholic Social Teaching that emerged from the Second Vatican Council. Populorum Progressio speaks about the challenges of development and the importance of justice in relations between rich and poor nations.