I am reminded of King Canute going down to the seashore to demand that the waves stop coming in. This episode is often misinterpreted -- Canute did not have delusions of grandeur: he was demonstrating to toadies that he was not all-powerful and he knew it.
If the UN wants to demonstrate just how utterly ineffective they are, then I think they are handling the situation in Syria quite perfectly.
Love it, both the historical anecdote and the analogue to the U.N.