An Iranian deputy foreign minister says the country is reviewing a proposal for the fifth round of indirect negotiations with the United States.

As the clock ticks toward the deadline set by Trump, the future of nuclear negotiations between the US and Iran hangs in the balance.

Iran’s Foreign Ministry spokesman Esmaeil Baghaei has warned that making fundamental mistakes could disrupt the negotiations between Tehran and Washington.

Senior Iranian and Omani diplomats met and held talks in Muscat ahead of the forthcoming indirect negotiations with the US delegation, which aim to address Tehran’s civilian nuclear program.

President Ebrahim Raeisi says Iran will make Israel and its supporters regret the "slightest attack" amid reports that Tel Aviv was "making a decision to act" against the Islamic Republic.

Iran has censured the United States for refusing to abandon its wrong path after two-day negotiations in the Qatari capital to discuss how to remove sanctions on the Islamic Republic ended Wednesday.  

The exemptions are meant to facilitate talks in Vienna and to revive the JCPOA, according to the US state department, but Iran says this move is not enough.