US Secretary of the Navy Ray Mabus watches as the USNS Kaiser (L) re-fuels the USS Princeton with biofuel about 150 miles north of the island of Oahu during the RIMPAC Naval exercises off Hawaii July 18,2012. [Photo/Agencies]
Scholars from Beijing and Moscow called for emerging economies to make their voice heard more at the G20 summit, as they exchanged views in a telephone conversation.