A UN envoy arrived in Sudan today to examine the government’s efforts to improve security and rein in Arab militia accused of months of atrocities in Darfur, preparing an assessment that could determine whether Sudan will be hit with sanctions.

The United Nations begins a three-day fact-finding mission in troubled Darfur today to establish whether the Sudanese government has fulfilled its pledges to improve security and rein in Arab militia accused of months of atrocities.