What is important is that we move forward so that we can gradually get into the details, he says, which is being spread by Iranian media.
The talks are taking place via Omani mediators. Special envoy Steve Witkoff represents the USA, according to a source with insight for AFP.
The fourth round of talks was originally planned for May 3 but was postponed due to logistical reasons, according to Oman.
Iran and the USA have been holding nuclear energy talks since April 12. It is the highest level of negotiations between the countries since a previous agreement between Iran and the Western world collapsed in 2018, during President Donald Trump's first term.