Analysts say the deadly march by Rwanda-backed rebels across eastern Congo could widen into a regional conflict drawing in even more countries, and two neighboring nations with the most involvement in the mineral-rich area might be the key to stopping the violence.

The decision by the Human Rights Council was requested by Congo and agreed to by consensus, meaning no vote was taken. It culminated an urgent session on the spiraling violence in a region where Rwanda-backed M23 rebels recently captured the key city of Goma.

The rebels continued advances in eastern Congo despite their own announcement of a cease-fire. The U.N. secretary-general called for them to lay down their guns and agree to mediation.