The U.N.'s Sudan Information Gateway contains everything you'd want to know about U.N. involvement in Sudan, from humanitarian assistance in Darfur to repatriation efforts in south Sudan.

International Crisis Group's section on Sudan contains reports on the south, including a March 2006 briefing entitled Sudan's Comprehensive Peace Agreement: The Long Road Ahead, which warns the peace agreement is showing signs of strain.

The Human Rights Watch page on Sudan includes assessments of developments since the 2005 peace deal.

For information on refugees returning home, visit the U.N. refugee agency's "South Sudan Operation" site section.

For in-depth reports from the field, check out the U.S.-based refugee advocacy group Refugees International.

Sudan responds to its critics. For the official word from Sudan, check the government's website.

SouthSudan.Net collates news and press releases from a variety of sources, as well as linking to other related websites.

This 2008 Chatham House report Sudan: Where is the Comprehensive Peace Agreement Heading? looks at how international attention has shifted from the North South conflict to Darfur and highlights the risk of renewed conflict arising out of land disputes and the return of internally displaced persons.