European Union foreign policy chief Catherine Ashton (L) and Iranian Foreign Minister Mohammad Javad Zarif arrive for a press statement after a conference in Vienna February 20, 2014. Iran and six ... more 
European Union foreign policy chief Catherine Ashton (L) and Iranian Foreign Minister Mohammad Javad Zarif arrive for a press statement after a conference in Vienna February 20, 2014. Iran and six world powers have agreed on an agenda for negotiations over Tehran's nuclear programme and will meet again in the second half of March in Vienna. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS ENERGY BUSINESS) less 
1 / 29
Reuters | Photo By HEINZ-PETER BADER / REUTERS
Thu, Feb 20, 2014 4:28 AM EST