United Nations (United States) (AFP) – One year after its sudden and disconcerting disappearance from a wall at the United Nations, a vast tapestry representing Picasso’s iconic “Guernica” has been returned by owners the Rockefeller family to its prominent place at the global body. The rehanging of the immense weaving was underway Saturday morning, a UN source said, as diplomats expressed relief about the return of the 25-foot-wide (7.5-meter) work which hung outside the Security Council chambers, where presidents, prime ministers and ambassadors would regularly pass. The tapestry was commissi…