Willard Romney finally did something good for the United States, not on purpose of course. Iran apparently has decided to swallow its pride and begin nuclear negotiations. We can't know for sure that they are really afraid of a not too bright and totally lacking a conscience cult member who is in the pocket of an extreme right-wing Israeli billionaire with a ton of Chinese money. Maybe the sanctions are finally getting to them, it's cost them dearly, or maybe China intervened with them. We will certainly never know the truth, a good guess is all we'll ever have. Beware of any story that sounds good.
Obama can of course take credit, it's not like he hasn't been doing everything he could, this probably includes things we won't know about anytime soon, if ever. If Iran doing this keeps the Meth Rat out of the White House, they've more than repaid any debt to the world than they ever could have owed.