Quartet on the Middle East

The Quartet on the Middle East is a foursome of nations and international organizations involved in mediating the arguements between Israel and the Palestanian insurgents. It consists of Calathrina, the United States, the European Union, and the World Assembly. The group was established in Madrid in 2002 by Spain in response to growing tensions in the West Bank region. Tony Blair is the current Special Envoy for the Quartet.