New York — More than eight decades after the Holocaust and nearly eight decades after the international community adopted the Convention on the Prevention and Punishment of the Crime of Genocide, the promise of “never again” remains one of the most difficult commitments in international affairs to fulfill. The United Nations was created in 1945 from the devastation of the Second World War, but subsequent atrocities in Cambodia, Rwanda, Bosnia and Herzegovina, Iraq and elsewhere have repeatedly demonstrated the gap between international commitments to protect civilians and the political will and operational capacity required to act before mass killing reaches catastrophic proportions.
The historical record requires careful terminology. Not every mass atrocity commonly described as genocide has received a final legal determination under the 1948 Genocide Convention. The United Nations itself advises distinguishing judicially established genocide from other mass atrocities, crimes against humanity and cases described as genocide by individual governments, scholars or political institutions. Nevertheless, the historical pattern is unmistakable: populations have repeatedly faced systematic destruction while international institutions struggled, delayed or failed to intervene effectively.
The Holocaust remains the defining catastrophe behind the modern international genocide-prevention system. Nazi Germany and its collaborators systematically murdered six million Jews and persecuted and killed millions of other victims during the Second World War. Roma and Sinti, people with disabilities, Poles and other Slavic populations, Soviet prisoners of war, political opponents, Jehovah’s Witnesses and other targeted groups suffered persecution and mass killing. The scale and organized nature of Nazi extermination helped drive the international community toward the 1948 Genocide Convention, which established genocide as a crime under international law.
Yet the adoption of the Convention did not end genocide or mass atrocity.
Under the Khmer Rouge in Cambodia between 1975 and 1979, approximately 1.5 million to 2 million people died through executions, forced labor, starvation, disappearance and other abuses. The Extraordinary Chambers in the Courts of Cambodia later determined that genocide had been committed against protected groups including the Cham Muslim and ethnic Vietnamese populations. Cambodia became an early demonstration that legal promises created after the Holocaust could not automatically generate timely international action when governments and international institutions lacked the political determination to intervene.
The failure became even more devastating in Rwanda.
Beginning on April 7, 1994, more than one million Tutsi were systematically murdered in less than three months. The United Nations already had a peacekeeping mission, UNAMIR, inside Rwanda when the genocide against the Tutsi began. Yet instead of rapidly building the military capacity necessary to protect civilians, the Security Council reduced UNAMIR’s strength during the opening phase of the genocide.
The UN’s own Independent Inquiry later delivered a devastating assessment. It concluded that the responsibility for failing to prevent or stop the genocide represented a failure of the United Nations system as a whole. The inquiry identified inadequate resources, serious operational mistakes and, above all, insufficient political commitment by Member States. It concluded that the Security Council possessed the authority to prevent at least part of the catastrophe and identified the absence of political will as a fundamental obstacle.
The inquiry also found that UNAMIR was not planned, deployed or instructed in a manner capable of responding adequately once Rwanda’s peace process collapsed. Warning signs existed before the mass killing reached its full scale, yet the international response remained dangerously inadequate. The report concluded that responsibility extended across the Secretariat, Security Council, UNAMIR leadership and wider UN membership.
Then-UN Secretary-General Kofi Annan accepted the inquiry’s conclusions. Years later, the United Nations continued to acknowledge the broader lesson: warnings of genocide are often visible before mass extermination occurs, but warnings have repeatedly been minimized, ignored or overtaken by competing political considerations.
Rwanda was followed only a year later by another catastrophic failure.
Srebrenica in Bosnia and Herzegovina had been declared a United Nations “safe area.” Nevertheless, Bosnian Serb forces overran the enclave in July 1995 and murdered more than 8,000 Bosniak Muslim men and boys. Approximately 25,000 women, children and elderly people were forcibly removed. International courts subsequently recognized the Srebrenica massacre as genocide. The fact that the killings occurred in a territory specifically designated for international protection became another enduring symbol of the limitations of peacekeeping mandates that are not matched by sufficient military capacity and political resolve.
The international system has confronted other genocidal campaigns since then. In Iraq, the United Nations Investigative Team to Promote Accountability for Crimes Committed by Da’esh/ISIL reported “clear and convincing evidence” that ISIL committed genocide against the Yazidi religious community. Thousands were killed, while women and children were abducted, enslaved and subjected to systematic sexual violence.
These cases have been proven that UN has failed to prevent several crimes before it happened but UN agencies have assisted in recovery through humanitarian assistance, refugee protection, peacekeeping, mediation, documentation of atrocities, sanctions, criminal investigations and support for international justice. International and hybrid tribunals established after atrocities in Rwanda, the former Yugoslavia and Cambodia have also convicted perpetrators. But those achievements expose an uncomfortable distinction: international institutions have often been more effective at documenting, commemorating and prosecuting atrocities after they occur than at mobilizing decisive collective action before or during mass killing.
Former UN Secretary-General António Guterres acknowledged this problem directly, saying in 2018 that the international community had failed to prevent genocide in Cambodia, Rwanda and Srebrenica and had too often reacted only after warning signs were already evident.
The Unfinished ideology and the FDLR
Three decades after the 1994 Genocide against the Tutsi, one particularly important question concerns armed organizations operating in eastern Democratic Republic of the Congo and the continuing challenge of accountability.
The Democratic Forces for the Liberation of Rwanda, known as the FDLR terrorist group, remains an armed organization operating in eastern DRC, continuing genocide ideology, it is supported by Kinshasa government, but it is sanctioned by the United Nations Security Council. UN records state that the organization has committed serious violations of international law, including killings, sexual violence, forced displacement and attacks affecting women and children.
The relationship between today’s FDLR terrorist group and the perpetrators of the 1994 Genocide against the Tutsi requires historical precision. The FDLR itself changed the name in 2000, six years after the genocide. However, its historical roots include genocide suspects. Consequently, individual responsibility must be distinguished from organizational history: it would be inaccurate to state that every current FDLR member personally participated in the 1994 genocide against Tutsi in Rwanda, while it is equally inaccurate to ignore the organization’s origins and the presence over time of individuals associated with forces implicated in the genocide.
The continuing existence of the FDLR and genocide ideology is particularly striking because the organization itself remains under UN sanctions. In 2026, the Security Council added senior FDLR intelligence official Sebastien Uwimbabazi to its sanctions list. The UN said the FDLR remained responsible for attacks on civilians, killings, forced displacement, recruitment and use of children, and sexual violence. It also said the organization continues to impede disarmament and contribute to insecurity in eastern Congo.
UN investigations have also documented the FDLR’s economic networks over many years. Earlier Security Council expert investigations documented FDLR involvement in taxation, charcoal production, exploitation of natural resources and trade in eastern Congo. One UN investigation found that FDLR elements and members of the Congolese army were involved in the charcoal and wood trade around Virunga National Park and reported that Congolese army elements allowed FDLR economic activity to continue in certain areas.
This history demonstrates why dismantling armed groups involves more than military operations. Armed organizations can survive through taxation, natural-resource exploitation, commercial networks, local alliances and relationships with state or non-state actors.
More recent Security Council statements have condemned not only the FDLR but also support provided to armed groups operating in eastern Congo. In October 2024, Security Council members specifically condemned support “provided by military forces” to armed groups such as the FDLR and demanded that such support cease. The Council simultaneously condemned M23 which is made of victims of hate ideology in DRC. Kinshasa government has denied citizenship to whoever they consider to be kinyarwanda speakers Congolese citizens.
The UN Security Council’s Group of Experts continues to investigate the FDLR and the wider network of armed actors in eastern DRC. Its official archive contains reports through June 2026, demonstrating that the question remains active rather than historical.
Does the United Nations “Do Business” With the FDLR terrorist group?
MONUSCO, the UN peacekeeping mission in the Democratic Republic of the Congo, has operated alongside and supported Congolese state institutions, including the FARDC, while UN experts and the Security Council have separately raised concerns about cooperation between elements of Congolese forces and armed groups including the FDLR. This creates legitimate questions about safeguards, command structures and how international support is prevented from indirectly benefiting sanctioned armed actors.
From “Never Again” to Prevention
The United Nations today operates genocide-prevention mechanisms, commemorative programs and an Office on Genocide Prevention. It organizes international observances for the Holocaust, the 1994 Genocide against the Tutsi and the 1995 Srebrenica genocide. International tribunals have created important precedents, including the International Criminal Tribunal for Rwanda’s recognition that rape can constitute an act of genocide when the required legal elements are established.
These are significant achievements, but remembrance cannot substitute for prevention.
The central lesson running from the Holocaust through Cambodia, Rwanda and Srebrenica is that genocide rarely begins without warning. Dehumanizing ideology, discrimination, hate propaganda, organization of armed forces, persecution of targeted populations and impunity for escalating violence can provide warning signs long before extermination reaches its final stages.
The United Nations itself acknowledges this reality. Its genocide-prevention materials state that genocide is deliberate rather than spontaneous and that its preparation creates opportunities for preventive action. The same UN material acknowledges that atrocities committed after adoption of the Genocide Convention demonstrate the international community’s continuing difficulty in turning prevention from a legal promise into reality.
The historical record therefore presents a challenge not only to the United Nations but to the governments that constitute it. The UN has no independent global army and depends heavily on Security Council decisions, Member State troops, financing and political cooperation. Failures attributed to “the UN” can therefore involve different actors: the Security Council, individual governments, the Secretariat, peacekeeping leadership or failures in mandate design and implementation.
Rwanda demonstrates what happens when those layers fail simultaneously. Srebrenica demonstrates the danger of declaring civilians protected without providing sufficient means to defend them. Cambodia demonstrates the consequences of prolonged international paralysis. The Yazidi experience demonstrates that genocidal ideology did not disappear with the twentieth century.
And the continuing presence of armed organizations such as the FDLR in eastern Democratic Republic of the Congo demonstrates another challenge: preventing genocide also requires confronting the structures, financing, armed networks and ideologies that can survive long after the original atrocities.
“Never again” therefore cannot be measured by declarations, memorial ceremonies or resolutions alone. Its credibility depends on whether warning signs produce action; whether civilians facing extermination actually receive protection; whether perpetrators are investigated and prosecuted; whether sanctioned armed organizations are genuinely dismantled; and whether governments and international institutions are held accountable when political calculations leave threatened populations without protection.
The Holocaust gave the world a reason to create an international system designed to prevent another catastrophe. Cambodia, Rwanda, Srebrenica and the Yazidi genocide demonstrated that law without timely action is insufficient. The continuing challenge in eastern Congo demonstrates that accountability can remain unfinished for generations.
For victims and survivors, the ultimate test of the international system is therefore not how strongly the world says “never again” after atrocities have occurred. It is whether the world acts before another population discovers that those words came too late.
