Let me offer a translation of the following passage from this story:
A top Iranian negotiator on nuclear matters has given a hopeful prognosis for upcoming talks with the United States and other world powers, calling the discussions a “real, new window of opportunity” and suggesting that the Islamic republic is prepared to address U.S. concerns about its nuclear intentions.
At the same time, Ali Asghar Soltanieh, Iran’s ambassador to the International Atomic Energy Agency, warned against attempts to intimidate his country with threats of new sanctions and said it is not prepared to give up its basic right to pursue peaceful nuclear power.
Translation: The Iranians are pleased that they will get the United States to talk to them without having offered any kind of concessions whatsoever. Once the United States sits at the bargaining table, the Iranians will make clear that any hope of having Iran give ground on the nuclear issue is utterly misplaced.