CLEAN : Iran talks substantive next round April 7

The transcript outlines the conclusion of a round of talks, with thanks extended by the High Representative. It mentions the framework for negotiations established in a previous meeting and highlights substantive discussions on issues like enrichment, the Iraq reactor, civil nuclear cooperation, and sanctions. Future meetings are scheduled in Vienna, with technical experts set to elaborate on relevant issues.

Who expressed gratitude to the participants at the end of the talks?

What will happen in the meantime before the next meeting?