An 18-month attempt to persuade Tehran to stop enriching uranium collapsed after a senior EU envoy failed to dent Iran's resolve to expand the technology, despite the threat of new UN sanctions. Saeed Jalili, Iran's senior nuclear negotiator, sought to paint his talks with the EU's Javier Solana in positive colors Friday, telling reporters the meeting was "good," and saying the two men had agreed to meet again next month. But Solana had a different message. "After five hours of meetings, I expected more, and therefore I am disappointed," he said. Unlike Jalili, he suggested no new meetings were planned, saying only that the two men would talk on the telephone next month and would set up a personal encounter only "if circumstances permit."