A high-profile surprise dinner hosted by Iranian Foreign Minister Manouchehr Mottaki failed to impress UN Security Council members, who said Iran needs to meet its international obligation and had nothing new to offer. Mottaki hosted dinner for the UN Security Council members on Thursday in New York, at which US' Deputy Permanent Representative at the UN Alex Wolff was also present. "It was a frank and professional exchange. Members of UNSC pressed Iranian Government to promptly meet its international obligations. The members also pointed out the significant flaws and shortcomings in Iran's approach," PJ Crowley Assistant Secretary of State for Public Affairs said. Mottaki, during conversation, focused on Iran's counter-proposal to Tehran research reactor, which deviates in significant ways from the balanced IAEA proposal to which it agreed to and then walked away from last October. "But we see this as yet another missed opportunity by Iran to meet its international obligations," Crowley said, adding Ambassador Wolf and others made clear to Iran that they have had the opportunity to build confidence and their actions and words since then have done exactly the opposite. "So we are in a position where we are working closely with others in the Security Council. We are working on this resolution. We look forward to a very strong, united international statement that tells Iran it's got to change course and meet its fundamental obligations," Crowley said. The State Department spokesman said Iranian President Mahmoud Ahmadinejad and Foreign Minister Manouchehr Mottaki, had nothing new to offer while they were in New York to attend the NPT Review Conference convened by the United Nations. "They are not in compliance with their IAEA obligations. They have not come forward with a meaningful or acceptable counter proposal on the TRR, something that we had offered last fall, in order to build confidence," he said. Crowley said Wolf had a one-to-one interaction with the Iranian Foreign Minister, during which he stressed that the US continues to have concerns about the welfare of its citizens who are in Iranian custody. "He shared with Foreign Minister Mottaki some letters from family members, and stressed again that we would like to see these individuals released," he said. "In the absence of a strong statement and significant pressure, Iran was not going to engage significantly. We have offered a path of engagement and Iran that had failed to reciprocate. So, Iran is isolated and unless it comes forward and answers the questions that international community has, it will face additional pressure and additional isolation," Crowley said.