US Secretary of State Hillary Clinton speaks alongside US Secretary of Treasury Timothy Geithner during a press conference following the conclusion of the Second Round of the US-China Strategic &amp; Economic Dialogue in Beijing, May 25, 2010. Clinton said two days of high-level Sino-US talks had been &#39;very productive&#39; but admitted differences remained, especially on economic and trade issues. AFP PHOTO / POOL / Saul LOEB