White House: Analysis of North Korean nuclear test not consistent with claims

Statement from the White House:

• Initial analysis inconsistent with reported nuclear hydrogen bomb
• "We're continuing the work necessary to learn more"
• 'Notable' that China and Russia echo US concerns
• 'Rock solid commitment' on the part of the US to safeguard allies in Japan and South Korea
• Wants North Koreans to end their provocative acts, commit to denuclearization

The White House is calling their bluff. It's extremely difficult to build a nuclear bomb but a game of nuclear chicken is a dangerous game.