Introduction

In an increasingly divided world, issues such as war, climate change and global
health crises become more complicated. These challenges are nearly impossible to be effectively addressed by individual nations acting alone, making international cooperation important. Multilateralism has therefore become one of the biggest ideas for today’s governance, encouraging countries to cooperate through international institutions rather than unilateral action. Among these institutions, the United Nations remains the largest multilateral organization, at 193 member states. However, growing geopolitical differences has raised questions about whether multilateralism can remain effective in today’s increasingly divided world.

Thesis: The United Nations shows that multilateralism can remain effective by
fostering international cooperation and establishing global norms, but becomes
limited when conflicts involve powerful nations with competing national interests.

What is multilateralism?

The concept of multilateralism originates from the Latin words multi meaning “many” and lateralis meaning “sides.” Combined, multilateralism refers to multiple countries cooperating to address common issues according to agreed rules, shared responsibilities, and collective decision-making. It seeks to create stability through communication, negotiation, and cooperation. The importance of multilateralism can be seen through big international conflicts.

An example is the Second World War. Although World War II began with Germany’s invasion of Poland in 1939, its deep causes lay in the political and economic instability created by the First World War. The economic burdens on Germany, while many European countries experienced political instability and economic depression. As governments increasingly prioritised their own countries’ issues over international cooperation, collective efforts to prevent aggression weakened significantly.

The failure of the League of Nations illustrates the consequences of ineffective
multilateralism. Established after World War I to preserve international peace, the League relied entirely on member states’ willingness to cooperate. However, Japan’s invasion of Manchuria in 1931, Italy’s invasion of Ethiopia in 1935 and
Germany’s violation of the Treaty of Versailles, member states failed to respond
collectively. Without unified political commitment or effective enforcement
mechanisms, the League became largely powerless, demonstrating that multilateral institutions cannot function effectively without genuine cooperation
from their members.

Following the devastation of World War II, world leaders concluded that lasting
peace required stronger international cooperation. Consequently, the United
Nations was established in 1945 to provide a platform where countries could resolve issues not only for their own good, but set up global, shared standards. The creation of the UN reflected a global recognition that multilateralism offered the most sustainable approach to maintaining international peace and preventing another world war.

The United Nations

The United Nations is the world’s largest multilateral organisation, founded in
1945 with the primary objective of maintaining international peace and security.
Today, it consists of 193 member states and operates through the General
Assembly, Security Council, International Court of Justice, and numerous
specialised agencies such as the World Health Organization and the International Civil Aviation Organization. Rather than directly trying to solve issues, the UN provides a framework in which countries negotiate, cooperate, and establish international rules. The fundamental purpose is not to impose solutions, but to facilitate dialogue and encourage consensus among sovereign states.

This reflects the core principle of multilateralism: long-lasting international solutions are more likely to emerge through collective agreement than unilateral action.

The UN has achieved several significant successes that demonstrate the continued value of multilateralism. One of its most influential achievements was the adoption of the Universal Declaration of Human Rights in 1948. Drafted by representatives from diverse legal, political, and cultural traditions, the declaration established the first universal framework of fundamental human rights. Its adoption demonstrated that countries with vastly different ideologies could negotiate shared principles despite political differences.

The United Nations was also able to accomplish their main goal so far– the
prevention of another World War. Although there were regional wars and still
exists, no conflict has escalated into another world war. This stability has been
supported by multilateral diplomacy, peacekeeping missions, conflict mediation,
and arms-control agreements negotiated within member states.

One notable example is the Treaty on the Non-Proliferation of Nuclear Weapons.
Through international inspections conducted by the International Atomic Energy
Agency, member states collectively monitor nuclear activities to limit the spread of nuclear weapons. Such agreements demonstrate that multilateral institutions can successfully reduce global risks when states recognise shared interests and commit to cooperative enforcement.

Despite these achievements, the UN has repeatedly struggled to respond effectively to conflicts involving major powers. These failures reveal the structural limitations of multilateralism within an increasingly divided international system. The most significant institutional limitation is the Security Council’s veto power. The five permanent members—the United States, Russia, China, the United Kingdom, and France—can individually block any Security Council resolution regardless of the level of international support. This drains down the effectiveness of multilateralism, as those five nations can prevent the making of beneficial rules.

Another major limitation is the lack of political will among influential member
states. International institutions ultimately depend on governments voluntarily
contributing military forces, financial resources, and diplomatic support. When
powerful states refuse to participate, the UN possesses little independent capacity to enforce its decisions. The 1994 Rwandan Genocide illustrates this problem clearly. Following the failed U.S. intervention in Somalia in 1993, American policymakers became highly reluctant to support another military operation in Africa—a phenomenon commonly referred to as the “Somalia Syndrome.” Without leadership from the United States and other major powers, Security Council members were unwilling to authorise sufficient troops or resources despite clear warnings that genocide was imminent. Consequently, approximately 800,000 people were killed while the international community failed to intervene effectively.

Lack of political will and political indifference is also a factor where
multilateralism’s effectiveness becomes limited. Members that holds high economic and social power, can refuse to take actions. Because those countries are the most economically stable members, other members couldn’t take action
without the support. This shows that because of a huge political gap between members in the same multilateral organization, there will be a bystander effect and some issues will not be solved effectively or immediately. For example, multilateral organizations such as the EU have a more successful record and history than the UN at achieving core objectives, because it is a tightly integrated political and economic union rather than a loose assembly of independent states.

However, this does not mean that multilateralism is ineffective. Rather, the evidence suggests that its effectiveness depends heavily on the political
environment in which it operates.

To what extent can multilateralism remain
effective in an increasingly divided world?

The pattern across both the successes and failures of the United Nations is that
multilateralism succeeds when member states hold aligned interests, but becomes significantly less effective when powerful nations prioritise strategic competition over collective action. The organisation performs well in areas such as humanitarian assistance, global health, peacekeeping, and international law because these issues generally produce shared benefits for all members.

In contrast, when disputes involve security, territory, or different geopolitical influence among major powers, national benefits override collective decision-making. This suggests that the primary weakness of the UN is not multilateralism itself, but rather its institutional structure.

To strengthen multilateralism’s effectiveness at such limitations, the UN should pursue institutional reforms that reduce decision-making paralysis while
maintaining broad international participation. One possible reform would be limiting or abolishing the veto power so that no single country can indefinitely
block collective action supported by the majority of member states. Although politically difficult, such reform would better reflect global realities rather than the balance of power in 1945. In addition, the UN could expand regional and issue-specific cooperation by empowering smaller groups of states with similar political, economic, or geographical interests to negotiate practical solutions
before presenting coordinated proposals to the broader international community.

These regional groupings would likely achieve strong consensus more efficiently
while still operating within the overall framework of the United Nations. This approach would preserve global cooperation while reducing the complexity
associated with negotiating among 193 states simultaneously.

Conclusion

Ultimately, multilateralism should not be viewed as an all-or-nothing concept.
Instead, its effectiveness exists on a scale determined largely by the willingness of states—particularly major powers—to cooperate. The United Nations has
demonstrated that multilateral institutions can successfully establish international norms, facilitate diplomacy, and coordinate responses to global challenges.

However, its limitations become most obvious when national interests of powerful countries directly collide. Therefore, multilateralism remains an indispensable mechanism for global governance, but its long-term effectiveness will depend upon institutional reforms that reduce great-power dominance while strengthening equitable international cooperation.

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