By EDITH M. LEDERER and MARK BANCHEREAU
UNITED NATIONS (AP) — The United States has accused Rwanda of breaching a peace agreement brokered by Washington, alleging that Rwanda is supporting a new, deadly rebel offensive in the mineral-rich eastern region of the Democratic Republic of Congo. The Trump administration has warned it will take measures against those undermining the peace accord.
U.S. Ambassador to the United Nations, Mike Waltz, made these accusations as reports emerge of over 400 civilian casualties due to intensified attacks by the M23 rebels, a group reportedly backed by Rwanda. Regional officials claim that Rwandan special forces have been spotted in the strategically important city of Uvira in eastern Congo’s South Kivu province.
Addressing the U.N. Security Council, Waltz expressed deep concern and disappointment over the resurgence of violence instigated by the M23 rebels. He stated, “Rwanda is steering the region toward heightened instability and conflict. We are prepared to use available measures to hold accountable those disrupting peace.”
Waltz urged Rwanda to honor Congo’s sovereignty and suggested that Congo should invite allied forces from neighboring Burundi to join its military efforts. Additionally, he emphasized that the United States is actively engaging with all involved parties to promote restraint and prevent further escalation of tensions.
He called on Rwanda to respect Congo’s right to defend its territory and invite friendly forces from neighboring Burundi to fight alongside Congolese forces. He also said the U.S. is engaging with all sides “to urge restraint and to avoid further escalation.”
M23’s latest push
The rebels’ latest offensive comes despite a U.S.-mediated peace agreement signed last week by the Congolese and Rwandan presidents in Washington.
The accord didn’t include the rebel group, which is negotiating separately with Congo and agreed earlier this year to a ceasefire that both sides accuse the other of violating. However, it obliges Rwanda to halt support for armed groups like M23 and work to end hostilities.
The rebels’ advance pushed the conflict to the doorstep of neighboring Burundi, which has maintained troops in eastern Congo for years, heightening fears of a broader regional spillover.
Congo’s ministry of communication confirmed in a statement Friday that M23 has seized the strategic port city of Uvira in eastern Congo, on the northern tip of Lake Tanganyika and directly across from Burundi’s largest city, Bujumbura.
Uvira was Congo’s government’s last major foothold in South Kivu after the provincial capital of Bukavu fell to the rebels in February. Its capture allows the rebels to consolidate a broad corridor of influence across the east.
M23 said it had taken control of Uvira on Wednesday afternoon, following a rapid offensive since the start of the month. Along with the more than 400 killed, about 200,000 have been displaced, regional officials say.
Concerns over an escalation
Civilians fleeing eastern Congo have also crossed into Burundi, and there have been reports of shells falling in the town of Rugombo, on the Burundian side of the border, raising concerns about the conflict spilling over into Burundian territory.
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Thousands fleeing fighting in Congo’s South Kivu arrive in Cibitoke, Kansega, Burundi, Thursday, Dec. 11, 2025. (AP Photo)
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Thousands fleeing fighting in Congo’s South Kivu arrive in Cibitoke, Kansega, Burundi, Thursday, Dec. 11, 2025. (AP Photo)
More than 100 armed groups are vying for a foothold in mineral-rich eastern Congo, near the border with Rwanda, most prominently M23. The conflict has created one of the world’s most significant humanitarian crises, with more than 7 million people displaced, according to the U.N. agency for refugees.
Congo, the U.S. and U.N. experts accuse Rwanda of backing M23, which has grown from hundreds of members in 2021 to around 6,500 fighters, according to the U.N.
Waltz said Rwandan forces have provided “logistics and training support to M23” and are fighting alongside the rebels in eastern Congo, with “roughly 5,000 to 7,000 troops as of early December.”
Congo calls for more pressure on Rwanda
Congo’s Foreign Minister Thérèse Kayikwamba Wagner accused Rwanda of trampling on the peace agreement, which she described as bringing “hope of a historic turning point.”
She warned, however, that the “entire process … is at stake,” and urged the Security Council to impose sanctions against military and political leaders responsible for the attacks, ban mineral exports from Rwanda and prohibit it from contributing troops to U.N. peacekeeping missions.
“Rwanda continues to benefit, especially financially but also in terms of reputation, from its status as a troop-contributing country to peacekeeping missions,” Wagner told The Associated Press.
Rwanda currently is one of the largest contributors of U.N. peacekeepers, with nearly 6,000 Rwandan troops.
Wagner also said economic agreements signed with the Trump administration as part of the peace deal will hinge on stability. “We have told our American partners that we cannot envision any path toward shared economic prosperity without peace,” she told the AP.
Eastern Congo, rich in critical minerals, has been of interest to Trump as Washington looks for ways to circumvent China to acquire rare earths, essential to manufacturing fighter jets, cell phones and more.
Wagner said the economic partnership is still at an early stage.
“Everything will start to take shape and become much more tangible once the joint governance mechanisms are put in place,” she said. “What we want is a win-win partnership … far beyond the single issue of minerals and their transfer,” she added.
Rwanda accuses Congo of ceasefire violations
Rwanda’s Ambassador to the U.N. Karoli Martin Ngoga accused Congo of repeatedly breaking the ceasefire. He also accused the Congolese government of supporting the mostly Hutu Democratic Forces for the Liberation of Rwanda, which “threatens the very existence of Rwanda and its people.”
Nearly 2 million Hutus from Rwanda fled to Congo after the 1994 Rwandan genocide that killed 800,000 Tutsi, moderate Hutus and others. Rwandan authorities have accused Hutus who fled of participating in the genocide, alleging that the Congolese army protected them.
“Rwanda reiterates its full commitment to implement its part of the agreement,” Ngoga told the Security Council.
While Rwanda denies the claim that it backs M23, it acknowledged last year that it has troops and missile systems in eastern Congo, allegedly to safeguard its security. U.N. experts estimate there are up to 4,000 Rwandan forces in Congo.
Banchereau reported from Dakar, Senegal. Associated Press writer Jean-Yves Kamale in Kinshasa, Congo, contributed to this report.
