In this photo provided by Turkish Prime Minister's Press Service, Turkish Prime Minister Recep Tayyip Erdogan, left, greets Iran's chief nuclear negotiator Saeed Jalili before a meeting in Ankara, Turkey, Tuesday, Sept. 18, 2012. Iran on Tuesday urged Western powers to engage in “purposeful” negotiations as top EU and Iranian representatives prepared to meet for talks on restarting stalled negotiations over Tehran's nuclear program. The EU's Foreign policy Chief Catherine Ashton and Jalili are meeting in Istanbul later on Tuesday. (AP Photo/Yasin Bulbul, Prime Minister's Press Service)
