Kerry and Iranian FM Mohammed Javad Zarif before a meeting in Geneva
Kerry and Iranian FM Mohammed Javad Zarif before a meeting in GenevaReuters

U.S. Secretary of State John Kerry will meet his Iranian counterpart in New York on Monday, the first time since their marathon talks which sealed the outlines of an emerging nuclear deal, AFP reports.

Kerry will hold talks with Foreign Minister Mohammad Javad Zarif on the sidelines of the 2015 nuclear Non-Proliferation Treaty conference at the United Nations, a senior State Department official said Sunday.

It would be the first meeting between the two since the April 2 deal reached in Lausanne, Switzerland setting out the parameters for the deal to curtail Iran's suspect nuclear program.

Global powers must still resolve a series of difficult technical issues by a June 30 deadline for a final deal, including the steps for lifting global sanctions imposed on Iran, and lingering questions over the possible military dimensions of its nuclear program.

Tensions arose after the preliminary framework was reached, as Iran recently accused the United States of "fraud" and "psychological warfare" in publishing a fact sheet announcing what the U.S. claims was agreed on in the framework deal and which an Iranian official called a false translation.

Iran's Supreme leader Ayatollah Ali Khamenei, who will have the final say on any deal, plunged the accord into doubt last week suggesting that "nothing is binding" while President Hassan Rouhani demanded that sanctions be immediately lifted when any deal is signed.

Meanwhile, Kerry is facing pressure over the deal in his own country, as lawmakers have been pressuring the administration to impose new sanctions on Iran.

The Secretary of State recently urged lawmakers not to put up obstacles in the path of the talks between Iran and the West on its nuclear program