Iran’s foreign minister will meet this week with diplomats from six other countries, including U.S. Secretary of State John Kerry, to discuss Iran’s disputed nuclear program. It is expected to mark the highest-level in-person meeting between representatives of the United States and Iran since the 1979 Iranian revolution. Catherine Ashton, foreign policy chief for the European Union, announced the plan on Monday after meeting with Iranian Foreign Minister Javad Zarif.

Catherine Ashton: “We talked about a number of important issues but focused on the nuclear issue. We had a good and constructive discussion. Foreign Minister Zarif will join the E3+3 meeting later this week, which I will be chairing, in order to have a short discussion. And we have agreed that we, he and I, will meet with our teams in Geneva in October.”

The White House has said it’s open to a meeting between Iranian President Hassan Rouhani and President Obama, both of whom are addressing the U.N. General Assembly today.