Another Core Group Meeting took place in Tehran in October 2015. Key topics of the meeting were the implementation of the Vienna Agreement concerning the Iranian nuclear program and the political situation in the region. German Foreign Minister Steinmeier, who opened the conference together with the Iranian Foreign Minister Zarif, emphasized the importance of transparency and trust for the successful implementation of the Vienna agreement: "After the game is before the game". Regarding the war in Syria, the Iranian Foreign Minister Zarif announced the readiness of his country to cooperate with all governments involved in resolving the conflict.