I'm asking because the UN has arguably more power and influence now than it had during Cold War, although its primary purpose was to get East and West on the same table during Cold War and provide a platform where all countries on earth could meet. It nowadays organizes and serves as an umbrella for a vast number of cultural and developmental programs, from concrete food relief missions to counter-terrorism.[1]
You need to keep in mind that the UN's purpose never was and never has been to confront nations or blocks, let alone to govern or serve as an international police force. That's not its purpose and could never be, given that almost all countries are part of it.