Rwanda-backed rebels who have captured eastern Congo’s largest city say they plan to take their rebellion to the capital and seek to gain political power.

The march by Rwanda-backed rebels across eastern Congo risks escalating into a regional conflict, with countries such as Burundi, Uganda, and Tanzania already involved. Despite diplomatic efforts, tensions remain high.

The U.N.'s top human rights body agreed Friday to a text presented by Congo that “firmly condemns” support of rebel fighters by neighboring Rwanda in eastern Congo. It also orders the creation of a team of experts to examine rights violations in the region.