Iran on Thursday expressed hopes of reviving moribund talks with world powers, a day after the Islamic republic unveiled a major progress in the nuclear program

Iran on Thursday expressed hopes of reviving moribund talks with world powers, a day after the Islamic republic unveiled a major progress in the nuclear program.
  
"We have always welcomed the principle of negotiations and we believe that, with a positive approach and spirit of cooperation, there can be a step forward in these negotiations," foreign ministry spokesman Ramin Mehmanparast was quoted as saying by the Fars news agency.

 Iran on Wednesday sent a letter confirming its readiness to discuss resuming negotiations in response to an October 2011 offer in that sense made by EU foreign policy chief Catherine Ashton.