A fourth round of nuclear talks between Iran and the United States is likely to take place over the weekend in the capital of Oman, with Iranian state media pointing to May 11 as a probable date.Iran's Nournews outlet was the first to report the resumption of Iran-U.

The United States and Iran have begun a third round of nuclear talks, entering what experts describe as a more difficult phase of technical negotiations this weekend as Washington lays out its conditions.