SelectPlusU.S. Diplomat to Attend Iranian Nuclear Mtg.U.S. Diplomat to Attend Iranian Nuclear Mtg.The Associated PressA top U.S. diplomat will join colleagues from other world powers at a weekend meeting with Iran's chief nuclear negotiator. However, there are no plans for the two negotiators to meet separately. (July 16)[Notes:ANCHOR VOICE] The U-S's third-highest ranking diplomat plans to head to Switzerland this weekend ... To take part in weekend meetings with Iran's chief nuclear negotiator. There are no plans for William Burns to meet directly with Iran's negotiator ... But the mere presence of a Bush administration official appears to be a break in the United States' policy. The talks on Saturday will also include diplomats from Europe. They are aimed at halting Iranian activities that could lead to the development of atomic weapons. The U-S is part of a six-nation effort to get Iran to stop enriching and reprocessing uranium, however, Washington has shunned contacts...