MADRID – The latest round of negotiations on Iran’s nuclear program between Iran and the so-called “5+1” group (the United Nations Security Council’s five permanent members – the United States, the United Kingdom, Russia, France, and China – plus Germany) has now begun. Following more than a year of deadlock, after negotiations in January 2011 led nowhere, this dialogue is for many the last chance to find a peaceful solution to a nearly decade-long conflict (in which I participated closely from 2006 to 2009 as the West’s main negotiator with Iran).