"He'll [Kerry] go tomorrow to New York City," Kirby said. "While he is in New York, he will meet with Iranian Foreign Minister Zarif to discuss implementation of the JCPOA and to follow up on earlier conversations regarding regional issues, including continued work of trying to get political resolution in Syria."
Kerry also plans to speak with Zarif about Tehran using its influence on Syria to move forward on a political solution in the country.
"The Secretary [Kerry] intends to raise with Foreign Minister Zarif ways in which Tehran can be more helpful going forward in the political process [in Syria]," Kirby said when asked if there was a shift underway to get Iran to use more of its leverage on Damascus to try to keep the ongoing peace talk process from unraveling.
Kirby noted that Iran does have influence on Syria and that Washington wants them to "use that influence in a constructive manner towards a political solution."