Sudan and Chad have signed a new agreement aimed at ending hostilities against each other.

Representatives of the two countries signed the accord Sunday in Qatar, following five days of talks.  

The deal calls for the countries to improve relations, implement past agreements, and end media campaigns against each other.

Sudan and Chad have repeatedly accused each other of supporting rebel movements on each other's territory.  The two governments have signed at least five other peace deals this decade to no avail.

The central African neighbors cut diplomatic relations for six months last year before restoring them in November.

Negotiators Sunday agreed to a summit between Sudanese President Omar al-Bashir and Chad's President Idriss Deby.  The summit is to be held in Libya at a later date.

Qatar and Libya have been leading efforts to end tension between Sudan and Chad.  Diplomats say improved relations would help settle the conflict in Sudan's war-torn Darfur region.

Some information for this report was provided by AFP and Reuters.