Kerry, while addressing a press conference here on the sidelines of the Vibrant Gujarat Summit, said he will hold talks with Iranian Foreign Minister Mohammad Javad Zarif in Geneva on Wednesday, hoping to "accelerate the process to make greater progress."
Iran and six powers -- the US, Russia, China, Britain, France and Germany -- are hoping to agree on a framework by March and a final agreement by June 30 that would address international concerns that Iran is using a civilian atomic energy programme to hide efforts to develop nuclear weapons. A charge Iran vehemently denies.
Global powers leading the talks are to meet again at a lower level from January 18 hoping to settle final issues to seal a deal.
Iran's atomic agency chief Ali Akbar Salehi insisted yesterday on Tehran's demands for increased uranium enrichment.