On Saturday, US President Donald Trump canceled his envoy's trip to the Pakistani capital Islamabad for planned peace talks with Iran, as Iran's proposal that Araghchi reportedly presented to Pakistan, which was acting as mediator, was not considered good enough.
"If they want to talk, just call!!!" Trump wrote on social media, while Araghchi traveled on to Oman.
Following the announcement, state-run Iranian media reported that some members of the Iranian delegation had returned to Tehran for consultations, and were later expected to reunite with Araghchi in Islamabad on Sunday evening.
Abbas Araghchi has also held talks with his counterparts in the region, including the foreign ministers of Turkey, Saudi Arabia and Qatar, and the Sultan of Oman.
