Speaking to reporters in Washington, Heiko Maas said he explained the German and Europe's position to U.S. national security adviser John Bolton during talks earlier on May 23.
'Europe is very, very united in its position on the nuclear accord with Iran, and that will not change,' Maas was quoted by Reuters as saying.
Maas was scheduled to meet Secretary of State Mike Pompeo later on May 23 to discuss the future of the nuclear deal, which lifted crippling Western economic sanctions in return for curbs on Tehran's nuclear ambitions.
The talks come two days after the United States vowed to impose what it said would be the 'strongest sanctions in history' on Iran.
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