During a news conference about an air collision in Washington, Trump was asked if he had a plan to bring peace in DRC, where a conflict in the east of the country - that Washington, the U.N. and others say involves Rwanda - has escalated.

Local sources said Kigali-backed fighters were advancing on a new front and had seized two districts in South Kivu province, after the rebel group’s capture of most of Goma, the capital of North Kivu.

Rwanda-backed fighters advanced on a second front in their offensive across eastern DR Congo on Wednesday after seizing control of the key city of Goma during heavy fighting with the Congolese military.