Iran lashes out at Austria after a report claims Tehran has an advanced nuclear weapons program, sparking diplomatic tensions and calls for explanations.

Any Israeli campaign on Iran without the U.S. support will face severe limitations given the long distance between the two countries.

U.S. President Donald Trump's threat to destroy Iran's nuclear facilities is a clear red line and will have severe consequences, the semi-official Fars News Agency reported on Friday.

The head of the United Nations’ atomic watchdog said Wednesday that “the jury is still out” on negotiations between Iran and the U.S. over Tehran’s rapidly advancing nuclear program, but described the continuing negotiations as a good sign.