Washington, Muharram 02, 1432, Dec 08, 2010, SPA -- The United States Tuesday voiced optimism that China could help limit North Korea’s provocative scope of action. “China has a critical role to play” said Deputy Secretary of State James Steinberg. Steinberg said. “We believe in the interest of both the United States and China … to work together to achieve solutions to the world’s most vexing problems.” --SPA 14:06 LOCAL TIME 11:06 GMT www.spa.gov.sa/843506