Iran and the 5+1 Powers will hold their fifth set of talks on a comprehensive nuclear agreement from June 16 to 20 in Vienna.

Iranian Foreign Minister Abbas Araqchi (pictured) announced the continuing negotiations on Sunday, two days after the fourth round of discussions concluded with little advance on a detailed settlement.

Last week’s talks sought a draft text covering issues such as uranium enrichment, the status of Iran’s nuclear facilities, and sanctions. The two sides said the discussions were “difficult” but continued to be conducted in a “constructive atmosphere”.

Foreign Minister Mohammad Javad Zarif wrote on Twitter on Sunday that “agreement is possible but illusions need to go”. He called on both sides not to miss an “opportunity” like that in discussions in 2005.

Iranian media — including Fars News, the outlet of the Revolutionary Guards — is headlining Zarif’s comment.