The agreement marks the first direct commitment from both sides since rebels seized key cities in eastern Congo.

DAKAR, Senegal (AP) — Congo and Rwanda-backed rebels have signed a declaration of principles for a permanent ceasefire in eastern Congo, where ethnic tensions and quest for rich minerals have resulted in one of Africa’s longest conflicts with thousands killed this year.

The Democratic Republic of Congo and the M23 rebel group signed on Saturday a declaration of principles to end fighting in eastern Congo, a sign of progress even as sources briefed on the talks said details needed to be negotiated.