Envoys from the United Nations and the African Union are visiting Sudan on a joint mission to re-energise the peace process for Darfur.
Jan Eliasson and Salim Ahmed Salim also want to secure Khartoum's permission for the deployment of UN troops.
Despite a peace agreement and numerous ceasefires the conflict in Sudan's far west shows little sign of ending.
More than 200,000 people have been killed and more than two million made homeless since war broke out in 2003.
The crisis in Darfur has brought numerous politicians, troubleshooters and envoys to Sudan.
For all their optimistic statements about progress made and agreements signed, little has changed on the ground.
Sudanese delays
More than million Darfuris remain in camps around major towns while in the countryside violence continues.
Sudan's President Omar al-Bashir says he wants to bomb the rebels to the negotiating table.
AU to tackle tough agenda
Attempts to deploy a joint AU-UN peacekeeping force have been mired in Sudanese reservations and delays.
Jan Eliasson, the UN envoy to Darfur and Salim Ahmed Salim, his African Union counterpart, are expected to meet with government officials in Khartoum before travelling on to Darfur.
There they will meet some of Darfur's many rebel factions and urge them to form a united position ahead of possible talks with the Sudanese government.
Darfur's aid effort is the biggest in the world but agencies say that increasing violence and attacks on humanitarian workers have brought the huge operation to the verge of collapse.
The Sudanese government says the security situation in Darfur is improving but it is refusing to give journalists permission to travel to the region.
^ Back to top | BBC Sport Home | BBC Homepage | Contact us | Help | ?