Iran and the United States held in-depth negotiations in Oman over Tehran's rapidly advancing nuclear program on Saturday, ending the discussions with a promise for more talks and perhaps another high-level meeting next weekend.

Indirect talks between Iran and the United States aimed at resolving a decades-long nuclear dispute have ended in Oman, Iranian state media reported, while U.S. President Donald Trump has signalled confidence in clinching a new pact that would block Iran's path to a nuclear bomb.