Sudan's government and Darfur rebels have met on the first day of new peace talks, with no sign that the two sides are closer to resolving the 20-month conflict.
The government and rebels today (Monday) traded fresh accusations of violating a ceasefire between rebels and pro-government Arab militias in Darfur.
The rebels again refused to sign measures increasing humanitarian access in the region, until the start of talks on security issues.
Khartoum says it welcomes the humanitarian measures and new security talks.
International aid groups say more access is needed to provide food, shelter and medical care to some 1.5 million civilians fleeing violence in Darfur.
The United Nations estimates 70,000 people have died as a result of the conflict, sparked last year by a rebel uprising.