The US has given the Iranian side a 48-hour deadline, demanding that it submit a concrete proposal.
Modern.az reports that, according to diplomatic sources, if an agreement is not reached, a military plan that could target Iranian religious leader Ali Khamenei may be on the table.
The parties will continue their next discussions on February 26 in Geneva. In the meetings, Iran's uranium enrichment level and highly enriched uranium reserves are the main topics.
US officials stated that if Iran submits a proposal, they are ready to begin detailed negotiations in Geneva.
