The United Nations
It isn’t surprising that the UN does so little, but rather that it does anything at all.
Let’s take the example of the UN Human Rights Council. In the last session, they voted in basically two blocs: the 23-country majority that includes the Russian Federation; and the 10-country minority that includes Canada, Finland, and Switzerland. Anything that has Russia saying “Yes” and Canada saying “No”, well… Let’s just say that I think the Human Rights Council is deeply, deeply flawed.
If one takes the HRC as a microcosm of the larger UN assembly (which I think one can), it’s truly amazing that they manage any positive action at all.