Vienna, Jul 6, IRNA -- 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.

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.

By IRNA