"The situation in the Democratic Republic of Congo is quite comparable to what is happening in Ukraine with Russia," Nobel Peace Prize winner Denis Mukwege told Reuters in Paris on Monday.
"We cannot on the one hand accuse or admit that Rwanda has attacked the Democratic Republic of Congo, in violation of international law, in violation of the U.N. Charter and, on the other hand, continue to financially support Rwanda," he said.
The Tutsi-led militia launched their latest offensive in Democratic Republic of Congo (DRC) in March, rapidly seizing control of several eastern towns. At least 390,000 people have been displaced by the fighting.
A preliminary U.N. report last week said the rebels executed at least 131 villagers in reprisal killings in Kishishe and Bambo villages as part of a campaign of murder, rape, kidnapping and looting.
"We must be able to ask Rwanda to stop supporting the M23 terrorists, because they are terrorists, they kill, they rape, they destroy villages. They are supported by a member state of the U.N. That this state can still be a supplier of U.N. troops, it is a totally inconsistent," Mukwege said.
The U.N. did not immediately respond to requests for comment.
Rwanda is the fourth largest contributor to U.N. peacekeeping missions, particularly in the Central African Republic, according to the U.N.
DRC has repeatedly accused its neighbor Rwanda of backing the rebels, an accusation Kigali denies.
The United States, the European Parliament, Belgium and a group of U.N. experts have all asked Rwanda to put an end to this support, which Kigali contests.
Gynecologist and activist Mukwege, who is the director of the Panzi hospital in South Kivu, won the Nobel Peace Prize in 2018 for his nearly two decade fight against sexual violence.