During the briefing in Berlin on Monday, Maas stressed the continuous cooperation of the European troika with the IAEA to preserve the nuclear deal, officially known as the Joint Comprehensive Plan of Action (JCPOA), IRNA reported.
He said that the IAEA has continued its inspection measures globally during the coronavirus pandemic, which is valuable and indicates the cause of real trust in this transnational and trans-regional organization.
The agency has been able to continue monitoring and verifying Iran's nuclear program under the same circumstances, he added.
The top German diplomat stressed that his country, along with France and the UK, will continue to work closely with the IAEA over the JCPOA.
"The IAEA is responsible for overseeing the nuclear deal with Iran and is trying to fully implement the deal," he said.
The European parties to the deal, along with other members Russia and China, have been trying to keep the JCPOA alive since the United States pulled out of it in 2018 and reinstated sanctions on Iran which were lifted under the accord.
A year after the US withdrawal, Iran began to roll back parts of its nuclear work curbed by the JCPOA in retaliation for the US measures and in order to pressure the three European nations to live up to their JCPOA commitments.