Is Iran Ready to Make a Deal?

As UN Security Council members plus Germany head for Baghdad to talk with Iran about its nuclear program, is a breakthrough at hand? Just yesterday, Yukiya Amano, Director-General of the UN's International Atomic Energy Agency, told reporters that Iran is about to allow inspection of a military site where nuclear triggers might have been tested. The US is doubtful and Israel's talking as tough as ever, but its hawkish defense minister has put a potential concession in writing. Is Iran caving in because of economic sanctions and a threatened embargo of its oil?  Is this another example of creating false expectations?