China says worried by new U.S. cyber strategy

Chinese President Xi Jinping and U.S. President Barack Obama (R) arrive for a group photo at the G20 summit in Brisbane November 15, 2014. REUTERS/Pablo Martinez Monsivais/Pool

BEIJING (Reuters) - China's Defence Ministry expressed concern on Thursday at the Pentagon's updated cyber strategy that stresses the U.S. military's ability to retaliate with cyber weapons, saying this would only worsen tension over Internet security.

The strategy presents a potentially far more muscular role for the U.S. military's cyber warriors than the Pentagon was willing to acknowledge in its last strategy rollouts in 2011 and singles out threats from Russia, China, Iran and North Korea.