TEHRAN: Iran’s supreme leader revealed on Tuesday that it ultimately wants 190,000 nuclear centrifuges—a figure he said was 19 times higher than world powers want to allow under a deal being discussed in Vienna. The comments, published on Ayatollah Ali Khamenei’s website on Tuesday, represent a dramatic intervention in the nuclear negotiations between Iran and the P5+1 group of Britain, China, France, Russia and the United States, plus Germany. The talks have been taking place behind closed doors and Khamenei’s remarks are the most open declaration yet of Iran’s demands. “Our officials say we need 190,000. Perhaps not today, but in two to five years that is the country’s absolute need,” Khamenei said, referring to the machines used in uranium enrichment.