New York (dpa) - Federal Foreign Minister Heiko Maas has again called on Iran to talks with the US without preconditions. "The only road to détente is talks between the US and Iran," he said in the evening's speech to the UN General Assembly. "But that will only work if there are no unrealistic preconditions for such a dialogue." Iranian President Hassan Ruhani had previously made the lifting of US sanctions a condition for talks with US President Donald Trump in his speech.