A5 a river of rented limousines flowed up to United Nations headquarters in Manhattan last week and disgorged delegates for the opening session of the General Assembly, a dour-faced old man stood across the street holding aloft a hand-lettered sign: THE U.N. is A FARCE. Nobody seemed to take notice except a group of high-school students waiting for a bus nearby. One of them tore out a page of notebook paper, scribbled a few words on it and hoisted his rejoinder: DON'T KNOCK IT. IT'S ALL WE GOT.
Among the representatives from 125* nations who launched the General Assembly's 24th session, a...