Obama warns of strains unless US, China balance growth
*To succeed, China, U.S. have to work together-Obama *He says he will raise currency issue with China *Obama will ask Beijing to do more to open markets *Also looking for progress on climate ahead of Copenhagen *Rejects criticism of stance on Human Rights in China Washington, Nov 9 (Reuters) - The United States sees China as a vital partner and competitor, but the two countries need to address economic imbalances or risk "enormous strains" on their relationship, President Barack Obama...