German Foreign Minister Frank-Walter Steinmeier called on all sides in the Iran negotiation process to show compromise to nail down a final comprehensive deal, IRNA reported.
Speaking to the press in Vienna on Sunday, Steinmeier stressed there was 'a unique chance' to resolve the conflict, provided everyone shows courage and the readiness for a compromise, especially in Tehran.
He added the resolution of the Iranian nuclear conflict means that the whole world wins, while a collapse of the talks means that everyone has lost.
Steinmeier urged all sides to mobilize their energy to seal a nuclear agreement ahead of the July 7 deadline; however he also made it clear that there should be no deal at any price.
He acknowledged the last steps towards a final deal were also the 'most difficult' ones.