May Day General Strike
California Highway Patrol officers take positions at the Golden Gate Bridge in anticipation of May Day demonstrations in San Francisco, California May 1, 2012. Authorities anticipated demonstrators would shut down the bridge, but agreement was reached to prevent that action. REUTERS/Robert Galbraith
BEIJING The new U.S. ambassador to China has said that stopping the threat posed by North Korea will be a top priority, along with resolving the U.S.-China trade imbalance, according to a video message to the Chinese people released on Monday.