The relevance of the United Nations is a widely debated topic, and it's more of a matter of perspective and values than a factual question with a single correct answer. Rather than searching for a definitive verdict (which doesn't really exist), let me lay out the key dimensions of this debate so you can weigh them yourself.
Arguments that the UN remains relevant
•Near-universal membership and legitimacy: With 193 member states, it's the only forum where virtually every country on Earth has a seat at the table, giving it unique convening power for global problems.
•Humanitarian and development work: Agencies like UNHCR, WFP, UNICEF, and WHO deliver food, vaccines, refugee protection, and disaster relief to hundreds of millions of people annually—work that continues regardless of Security Council gridlock.
•Peacekeeping: UN peacekeepers are deployed in multiple conflict zones, and while imperfect, these missions have helped stabilize situations in places like Liberia, Sierra Leone, and parts of the Balkans historically.
•Normative framework: Treaties and bodies on human rights, climate (UNFCCC/Paris Agreement), nuclear non-proliferation, and international law originate from or are housed within the UN system.
•Specialized agencies: Bodies like the IAEA, ICAO, WHO, and WTO-adjacent structures handle technical coordination (aviation safety, disease surveillance, nuclear monitoring) that few dispute is useful.
Arguments that it's increasingly sidelined or ineffective
•Security Council paralysis: The five permanent members (US, Russia, China, UK, France) can veto any resolution, which has repeatedly blocked action on crises like Syria, Ukraine, and Gaza.
•Enforcement problems: The UN has no independent army and relies on member states for enforcement, meaning resolutions are often symbolic rather than binding in practice.
•Credibility critiques: Critics point to scandals (e.g., past peacekeeper misconduct, oil-for-food corruption in Iraq), bureaucratic bloat, and the presence of human-rights-abusing states on bodies like the Human Rights Council as undermining moral authority.
•Great-power rivalry: Rising US-China tensions and the Russia-Ukraine war have made the Security Council a stage for deadlock rather than cooperation, leading some to argue power has shifted to alternative forums (G7, G20, regional blocs, ad hoc coalitions).
•Calls for reform: Many argue the UN structure reflects a 1945 power balance (e.g., permanent Council seats) that no longer matches today's geopolitics, fueling periodic reform debates that rarely produce major change.
A reasonable synthesis
Most serious observers land somewhere in the middle: the UN is simultaneously indispensable for humanitarian delivery, technical coordination, and as a universal diplomatic venue, while being structurally hamstrung on hard security issues where major powers disagree. Its "relevance" often depends on which function you're evaluating—it performs very differently as a humanitarian agency network versus as a collective-security enforcer.
If you'd like, I can look into how the UN has performed on a specific recent issue (e.g., Gaza, Ukraine, Sudan) to make this more concrete—just let me know.