Nightly News | September 19, 2013
>>> from washington and around the world. our chief foreign affairs correspondent andrea mitchell at her post at the state department again tonight. good evening.
>> reporter: good evening, brian. based in part on those comments to ann curry , u.s. officials are eager to test the new president of iran 's seriousness, possibly as early as next week in new york when both leaders will be at the united nations . president obama and rouhani have broken the ice with a warm exchange of letters mr. obama initiated. as headlines from around the world noted his comments to ann curry disavowing a nuclear threat. there was a clear change in tone from iran . is it a positive sign coming in this interview?
>> the comments have been positive. but everything needs to be put to the test. we'll see where we go and at the right moment i think the white house and state department will make it clear where we are heading.
>> reporter: though iran usually blocks iranians from twitter now rouhani is tweeting pictures of him with ann, even retweeting a picture of a prominent human rights lawyer his government released along with political prisoners wednesday. zarif returned to the u.n. today where he's known well from years as iran 's u.n. ambassador.
>> the president used a lot of sugar coated words. he did so deliberately in order to deceive. we don't need words. we need actions. we need them to stop their nuclear program .
>> reporter: british officials say they are cautiously optimistic. france's president hollande will meet with him next week.
>>> andrea mitchell at the state department tonight. thanks.