KAMPALA, Uganda (AP) — United Nations Secretary-General Ban Ki-moon on Friday urged African leaders to implement a peace plan that the U.N. hopes will stabilize eastern Congo, a region long plagued by violence and which now is back on edge.

Ban told a news conference in Uganda that he expects regional leaders to try to find solutions as eastern Congo once again descends into another phase of hostilities sparked partly by the U.N’s deployment of a brigade of peacekeepers with a mandate to attack rebel groups. Ban said the deployment would become fully operational “in a matter of weeks,” although only about 100 members of a planned brigade of 3,000 have arrived there so far.