Iran's chief nuclear negotiator Saeed Jalili speaks during a media conference at the Iranian embassy in Beijing April 2, 2010. U.S. President Barack Obama said on Tuesday that he wants a new Iran sanctions resolution adopted within weeks, with China agreeing to serious negotiations with Western powers about such sanctions. Jalili, Tehran's top nuclear negotiator, was in Beijing on Thursday to discuss the diplomatic showdown. REUTERS/David Gray (CHINA - Tags: POLITICS MILITARY)