Rwanda-backed rebels were expanding their presence in eastern Congo after capturing Goma, the region's major city, the U.N. said Friday, also expressing concerns over executions it learned were carried out by the rebels in recent days following a major escalation of their yearslong rebellion.

What has been a slow-burn crisis in eastern DRC has again exploded into the open. Kagame appears to have calculated that a change of US administration is a good time to strike. A peace process mediated by Angola and sponsored by the US collapsed in the dying days of Joe Biden’s administration.

Rwanda-backed M23 rebels are moving “rapidly” through South Kivu province toward the city of Bukavu in eastern Democratic Republic of Congo, the United Nations said.