Delegates from the United States and Iran are set to begin nuclear negotiations in the Omani capital, Muscat, as US President Donald Trump again warned Tehran of military action if a deal is not reached.

The stakes could hardly be higher for fresh nuclear talks between the United States and Iran planned for this weekend.

Iran and the United States begin high-stakes talks to reach a new nuclear deal on Saturday foreshadowed by President Trump’s threat of military strikes as a consequence of failure and Tehran’s warning any attack on it would drag the US into another Middle Eastern conflict.