According to the Encyclopaedia Britannica, The United Nations is tasked with maintaining peace, security, and friendly relations amongst participating countries while aiding social and economic development. If the United Nations was fully funded, they could do a lot of positive work around the world that they wouldn’t be able to with budget constraints. More funding would mean a more efficient United Nations overall.

Source: http://images.ssireview.org/sized/images/blog/Social_Enterprise_wordle-640×507.jpg
Even if the United Nations was fully funded, social enterprise and programs such as the Arc Initiative would still be prominent. A huge point of these kinds of institutions is that we may get involved and do our part to work toward something we’re passionate about while bettering the livelihood of those we are trying to help. Just because the United Nations is fully funded, it doesn’t mean they can cover every problem in the world. Social Enterprise and the Arc Initiative give us the opportunity to get involved which is an invaluable experience for us and is invaluable to those being helped.
And they failed very badly in maintaining the peace. Funding is not the main reason, the main culprit is behind the funding reason, livejournal say many things about them.
https://gotennisracquet.livejournal.com/