US vice president Joe Biden delivers a speech at the opening session of the China-US Strategic and Economic Dialogue (S&ED) in Washington, D.C. on July 10, 2013. The fifth round of the China-US Strategic and Economic Dialogue started on Wednesday, as the two-day event will see leading officials from more than 20 departments and ministries of both countries talk on a wide range of topics covering political, security, economic and financial issues. [Photo/CNS]