Iran must not scupper negotiations to save the 2015 nuclear agreement, warned German Chancellor Olaf Scholz on Saturday, calling on Tehran to make concessions. “The Iranian leadership now has a choice: now is the moment of truth,” Scholz said at the Munich Security Conference. “We have come a long way in the negotiations in Vienna in the last 10 months. All the elements for a conclusion of the negotiations are on the table,” Scholz said. However, he said, if Iran continues to enrich fuel and at the same time suspends monitoring by the International Atomic Energy Agency (IAEA), this is unaccept…