For links for Darfur, east and south Sudan, please check the links pages under each section.

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

One of the best no-holds-barred blogs on Sudan is written by Eric Reeves, a Professor of English Language and Literature at Smith College in Northampton, Massachusetts. There's also Sleepless in Sudan, "direct from a dazed and confused aid worker in Darfur".

Sudan responds to its critics. For the official word from Sudan, check the government's website, run by its embassy in London.

For information on refugees - those returning home to south Sudan and those who're held up along the Sudan/Chad border and in Chad - the best place to start is the United Nations Refugee Agency's website. For in-depth reports from the field, check out the U.S.-based refugees advocacy group Refugees International.