DUBAI (Reuters) Sun Aug 26, 2012 5:44am EDT - Iran welcomed a group of 120 developing nations on Sunday to a summit it says proves that Washington has failed to isolate it from the rest of the world. Opening the Non-Aligned Movement (NAM) meeting in Tehran, Foreign Minister Ali Akbar Salehi said he hoped for a show of solidarity against sanctions the West has imposed to punish Iran for its nuclear activities