According to German Foreign Ministry Twitter message, Mass made the remarks Saturday in a phone call with Iranian Foreign Minister Mohammad Javad Zarif.
Germany is supporting JCPOA as long as Iran fulfills its obligations, Mass was quoted as saying.
Germany is ready to make intensive efforts to achieve this goal [preserving Iran nuclear deal], he said, adding that they also expect Iran to play a constructive role.
Iran's foreign minister on Friday night held separate phone conversations with Federica Mogherini, High Representative of the European Union for Foreign Affairs and Security Policy; Heiko Maas, Germany's Minister of Foreign Affairs; Margot Wallström, Swedish Ministry for Foreign Affairs; and Anders Samuelsen, Danish Minister of Foreign Affairs to discuss Washington's move to re-impose sanctions against Iran and Europe's attempts to counter the measures.
Zarif and Danish Minister of Foreign Affairs discussed the recent allegation of carrying out terrorist operations leveled by Denmark's police against Iran.
While dismissing the groundless claim, Zarif pointed to the Zionist regime's apparent attempts to damage Iran's relations with European countries and expressed Iran's preparedness to cooperate with the Danish security authorities to bring to light the plot.
Iran's foreign minister also reminded the responsibility of the Danish government to arrest and prosecute the terrorist group which has claimed responsibility for Ahvaz attack and described as unacceptable Danish government's support of the terrorists.
Danish Minister of Foreign Affairs also reiterated Denmark's support for Iran nuclear deal and Europe's financial mechanism to continue economic cooperation with Iran.
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