Dhaka, April 27 -- Iran and the United States have agreed to continue nuclear talks next week, both sides said on Saturday, though Iranian Foreign Minister Abbas Araqchi voiced "extreme cautious" about the success of the negotiations to resolve a decades-long standoff.

US President Donald Trump has signalled confidence in clinching a new pact with the Islamic Republic that would block Tehran's path to a nuclear bomb.

Araqchi and Trump's Middle East envoy Steve Witkoff held a third round of the talks in Muscat through Omani mediators for around six hours, a week after a second round in Rome that both sides described as constructive, reports Reuters.

"The negotiations are extremely serious and technical ... there are still differences, b...