President Vladimir Putin and his Ukrainian counterpart Viktor Yanukovych met on Friday in the Russian city of Sochi for unannounced talks to discuss signing a strategic partnership treaty, Ukraine's presidency said. "Ukrainian President Viktor Yanukovych and Russian President Vladimir Putin met in Sochi," said the office of Yanukovych, who is returning from his three-day visit to China. "The heads of state discussed issues of trade and economic cooperation in various industries of the economy and preparation for a future treaty on a strategic partnership."