Latest reports from Iran's state media suggest no delegation has departed from their side to Pakistan yet for negotiations with the United States.
Iranian officials have stated that Iran's attendance would depend on a change in the US's behaviour and positions.
Former US negotiators have highlighted the 'deep historical distrust' and contrasting negotiating styles as reasons why the peace deal might be far from achieved.
Wendy Sherman, the lead negotiator on the JCPOA nuclear deal with Iran, stated that the Trump administration's approach during the first round of negotiations with Iran was all wrong.
Rob Malley, who was part of the team negotiating with Iran on the JCPOA nuclear deal, said that the level of trust between the two nations is 'probably almost at an all-time low.'
