U.S. President Barack Obama arrives in St. Petersburg Thursday to attend the G20 summit.<br/> <br />Obama will hold bilateral meetings with Chinese President Xi Jinping and French President Francois Hollande.<br/> <br />China warned on Thursday that military intervention in Syria would hurt the world economy and push up oil prices, reinforcing Vladimir Putin's attempts to talk Obama out of air strikes.<br/> <br />The rift over Syria could overshadow the summit during which global leaders want to forge a united front on growth, trade, banking transparency and fighting tax evasion.<br/> <br />There are no plans for a formal bilateral meeting between Obama and Russian President Vladimir Putin.
